teacherstack.com - dns.ninja

`teacherstack.com`

DNSSEC	⚠️ Not signed
A	18.67.130.19^{🇺🇸 Amazon18.67.128.0/22}
		PTR	`server-18-67-130-19.gru1.r.cloudfront.net`
A	18.67.130.43^{🇺🇸 Amazon18.67.128.0/22}
A	18.67.130.67^{🇺🇸 Amazon18.67.128.0/22}
A	18.67.130.87^{🇺🇸 Amazon18.67.128.0/22}
NS	`ns-573.awsdns-07.net` ⭐
		A	2600:9000:5302:3d00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-573.awsdns-07.net`
		A	205.251.194.61^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-573.awsdns-07.net`
NS	`ns-1430.awsdns-50.org`
		A	2600:9000:5305:9600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1430.awsdns-50.org`
		A	205.251.197.150^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1430.awsdns-50.org`
NS	`ns-1539.awsdns-00.co.uk`
		A	2600:9000:5306:300::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1539.awsdns-00.co.uk`
		A	205.251.198.3^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1539.awsdns-00.co.uk`
NS	`ns-91.awsdns-11.com`
		A	2600:9000:5300:5b00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-91.awsdns-11.com`
		A	205.251.192.91^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-91.awsdns-11.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c06::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f27.1e100.net`
		A	2607:f8b0:4004:c08::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f27.1e100.net`
		A	2607:f8b0:4004:c09::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f27.1e100.net`
		A	2607:f8b0:4004:c2d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ry-in-f26.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.net`
		A	172.253.63.27^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f27.1e100.net`
		A	172.253.115.26^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f26.1e100.net`
		A	172.253.122.26^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f26.1e100.net`
		A	192.179.18.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ry-in-f27.1e100.net`
TXT	`google-site-verification=p2N0rsuVGfH-xMqmw87aNQe5-Kg892Cx1q0KZl-4ZH0`
TXT	`v=spf1 include:_spf.google.com include:amazonses.com ~all`
SOA	`ns-573.awsdns-07.net`awsdns-hostmaster@amazon.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786469239

Subdomains

app.teacherstack.com

Same first word

teacherstack.com

DNS History

110 records (9 active, 101 former)

○NSbuy.internettraffic.com2015-07-07 → 2016-02-05 · 4 obs

● 2015-07-07 13:28:26
● 2016-02-05 12:58:08
○ 2016-04-25 18:19:10
○ 2026-08-11 17:41:02

●NSns-1430.awsdns-50.org2026-02-16 → 2026-08-11 · 3 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
● 2026-08-11 17:41:02

●NSns-1539.awsdns-00.co.uk2026-02-16 → 2026-08-11 · 3 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
● 2026-08-11 17:41:02

●NSns-573.awsdns-07.net2026-02-16 → 2026-08-11 · 3 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
● 2026-08-11 17:41:02

●NSns-91.awsdns-11.com2026-02-16 → 2026-08-11 · 3 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
● 2026-08-11 17:41:02

○NSns11.domaincontrol.com2016-12-05 → 2017-09-05 · 5 obs

○ 2016-04-25 18:19:10
● 2016-12-05 22:22:58
● 2017-09-05 12:40:50
○ 2026-02-16 07:21:16
○ 2026-08-11 17:41:02

○NSns12.domaincontrol.com2016-12-05 → 2017-09-05 · 5 obs

○ 2016-04-25 18:19:10
● 2016-12-05 22:22:58
● 2017-09-05 12:40:50
○ 2026-02-16 07:21:16
○ 2026-08-11 17:41:02

○NSsell.internettraffic.com2015-07-07 → 2016-02-05 · 4 obs

● 2015-07-07 13:28:26
● 2016-02-05 12:58:08
○ 2016-04-25 18:19:10
○ 2026-08-11 17:41:02

○MXmailstore1.secureserver.net2016-12-05 → 2017-09-05 · 4 obs

● 2016-12-05 22:22:58
● 2017-09-05 12:40:50
○ 2026-02-16 07:21:16
○ 2026-08-11 17:41:02

●MXsmtp.google.com2026-02-16 → 2026-08-11 · 5 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
○ 2026-06-26 15:04:02
● 2026-06-26 22:48:38
● 2026-08-11 17:41:02

○MXsmtp.secureserver.net2016-12-05 → 2017-09-05 · 4 obs

● 2016-12-05 22:22:58
● 2017-09-05 12:40:50
○ 2026-02-16 07:21:16
○ 2026-08-11 17:41:02

○A108.139.119.352026-04-07 → 2026-05-18 · 17 obs

○ 2026-04-05 16:45:48
● 2026-04-07 22:26:00
○ 2026-04-08 01:10:54
○ 2026-04-08 21:29:12
● 2026-04-09 00:06:14
○ 2026-04-09 08:14:58
○ 2026-04-14 06:56:28
● 2026-04-14 18:06:08
○ 2026-04-14 20:10:02
○ 2026-04-18 00:11:18
● 2026-04-18 04:05:32
○ 2026-04-18 10:43:38
○ 2026-05-18 21:23:56
● 2026-05-18 23:13:18
● 2026-05-18 23:59:06
○ 2026-05-19 04:08:36
○ 2026-08-11 17:41:02

○A108.139.119.762026-04-07 → 2026-05-18 · 17 obs

○A108.139.119.822026-04-07 → 2026-05-18 · 17 obs

○A108.139.119.872026-04-07 → 2026-05-18 · 17 obs

○A108.139.166.1272026-04-04 → 2026-04-29 · 7 obs

○ 2026-04-01 13:19:44
● 2026-04-04 05:16:56
○ 2026-04-04 13:39:06
○ 2026-04-29 06:42:52
● 2026-04-29 09:34:50
○ 2026-04-29 13:08:18
○ 2026-08-11 17:41:02

○A108.139.166.22026-04-04 → 2026-04-29 · 7 obs

○ 2026-04-01 13:19:44
● 2026-04-04 05:16:56
○ 2026-04-04 13:39:06
○ 2026-04-29 06:42:52
● 2026-04-29 09:34:50
○ 2026-04-29 13:08:18
○ 2026-08-11 17:41:02

○A108.139.166.462026-04-04 → 2026-04-29 · 7 obs

○ 2026-04-01 13:19:44
● 2026-04-04 05:16:56
○ 2026-04-04 13:39:06
○ 2026-04-29 06:42:52
● 2026-04-29 09:34:50
○ 2026-04-29 13:08:18
○ 2026-08-11 17:41:02

○A108.139.166.62026-04-04 → 2026-04-29 · 7 obs

○ 2026-04-01 13:19:44
● 2026-04-04 05:16:56
○ 2026-04-04 13:39:06
○ 2026-04-29 06:42:52
● 2026-04-29 09:34:50
○ 2026-04-29 13:08:18
○ 2026-08-11 17:41:02

○A108.156.85.1072026-06-16 → 2026-07-27 · 10 obs

○ 2026-06-16 10:41:48
● 2026-06-16 14:18:00
○ 2026-06-16 15:16:22
○ 2026-06-16 21:08:38
● 2026-06-16 23:12:12
● 2026-06-18 03:05:12
○ 2026-06-18 04:29:34
● 2026-07-27 11:47:08
○ 2026-07-27 13:31:44
○ 2026-08-11 17:41:02

○A108.156.85.1092026-06-16 → 2026-07-27 · 10 obs

○A108.156.85.852026-06-16 → 2026-07-27 · 10 obs

○A108.156.85.922026-06-16 → 2026-07-27 · 10 obs

○A108.156.91.102026-05-19 → 2026-07-01 · 17 obs

○ 2026-05-19 04:08:36
● 2026-05-19 09:20:42
● 2026-05-19 12:14:22
○ 2026-05-19 16:39:50
○ 2026-05-20 03:44:50
● 2026-05-20 04:45:34
● 2026-05-31 10:42:14
○ 2026-05-31 13:13:14
○ 2026-06-01 22:01:18
● 2026-06-02 23:20:40
● 2026-06-06 02:46:48
○ 2026-06-07 08:42:38
● 2026-06-08 04:58:00
○ 2026-06-08 14:58:20
● 2026-07-01 07:36:16
○ 2026-07-01 08:07:22
○ 2026-08-11 17:41:02

○A108.156.91.872026-05-19 → 2026-07-01 · 17 obs

○A108.156.91.922026-05-19 → 2026-07-01 · 17 obs

○A108.156.91.982026-05-19 → 2026-07-01 · 17 obs

○A108.158.122.1082026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-09 08:14:58
● 2026-04-11 16:14:20
○ 2026-04-12 01:35:08
○ 2026-08-11 17:41:02

○A108.158.122.682026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-09 08:14:58
● 2026-04-11 16:14:20
○ 2026-04-12 01:35:08
○ 2026-08-11 17:41:02

○A108.158.122.72026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-09 08:14:58
● 2026-04-11 16:14:20
○ 2026-04-12 01:35:08
○ 2026-08-11 17:41:02

○A108.158.122.722026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-09 08:14:58
● 2026-04-11 16:14:20
○ 2026-04-12 01:35:08
○ 2026-08-11 17:41:02

○A13.225.239.1042026-05-04 → 2026-05-04 · 4 obs

○ 2026-05-03 17:58:42
● 2026-05-04 13:32:14
○ 2026-05-04 14:51:08
○ 2026-08-11 17:41:02

○A13.225.239.82026-05-04 → 2026-05-04 · 4 obs

○ 2026-05-03 17:58:42
● 2026-05-04 13:32:14
○ 2026-05-04 14:51:08
○ 2026-08-11 17:41:02

○A13.225.239.92026-05-04 → 2026-05-04 · 4 obs

○ 2026-05-03 17:58:42
● 2026-05-04 13:32:14
○ 2026-05-04 14:51:08
○ 2026-08-11 17:41:02

○A13.225.239.902026-05-04 → 2026-05-04 · 4 obs

○ 2026-05-03 17:58:42
● 2026-05-04 13:32:14
○ 2026-05-04 14:51:08
○ 2026-08-11 17:41:02

○A13.227.231.212026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-25 18:07:42
● 2026-07-25 23:44:10
○ 2026-07-26 04:07:24
● 2026-07-26 20:59:36
○ 2026-07-26 22:09:02
○ 2026-08-11 17:41:02

○A13.227.231.392026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-25 18:07:42
● 2026-07-25 23:44:10
○ 2026-07-26 04:07:24
● 2026-07-26 20:59:36
○ 2026-07-26 22:09:02
○ 2026-08-11 17:41:02

○A13.227.231.642026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-25 18:07:42
● 2026-07-25 23:44:10
○ 2026-07-26 04:07:24
● 2026-07-26 20:59:36
○ 2026-07-26 22:09:02
○ 2026-08-11 17:41:02

○A13.227.231.982026-07-25 → 2026-07-26 · 6 obs

○ 2026-07-25 18:07:42
● 2026-07-25 23:44:10
○ 2026-07-26 04:07:24
● 2026-07-26 20:59:36
○ 2026-07-26 22:09:02
○ 2026-08-11 17:41:02

○A13.249.182.1212026-02-19 → 2026-08-03 · 42 obs

○ 2026-02-19 04:37:34
● 2026-02-19 13:09:56
○ 2026-02-20 04:37:46
○ 2026-02-21 16:15:34
● 2026-02-22 05:15:06
● 2026-02-24 10:14:10
○ 2026-02-25 11:00:24
○ 2026-03-25 16:32:52
● 2026-07-04 20:02:18
○ 2026-07-05 00:32:48
● 2026-07-07 18:19:36
○ 2026-07-09 07:06:44
○ 2026-07-10 19:01:00
● 2026-07-12 05:53:34
○ 2026-07-12 08:03:58
● 2026-07-17 05:01:24
○ 2026-07-17 09:35:22
● 2026-07-20 21:40:30
○ 2026-07-20 22:40:46
● 2026-07-21 17:40:30
○ 2026-07-21 21:20:10
● 2026-07-23 10:39:18
○ 2026-07-23 12:00:32
● 2026-07-23 12:46:32
○ 2026-07-23 17:39:14
● 2026-07-23 23:31:50
○ 2026-07-24 01:46:28
● 2026-07-24 18:31:12
○ 2026-07-25 08:48:40
● 2026-07-25 09:28:10
○ 2026-07-25 11:32:06
● 2026-07-25 17:09:50
○ 2026-07-25 18:07:42
● 2026-07-28 06:42:16
○ 2026-07-28 11:35:18
● 2026-07-30 14:15:34
○ 2026-07-30 14:46:26
● 2026-07-31 10:57:56
○ 2026-07-31 12:35:44
● 2026-08-03 02:47:04
○ 2026-08-03 04:13:54
○ 2026-08-11 17:41:02

○A13.249.182.1222026-02-19 → 2026-08-03 · 42 obs

○A13.249.182.202026-02-19 → 2026-08-03 · 42 obs

○A13.249.182.292026-02-19 → 2026-08-03 · 42 obs

○A13.32.179.1142026-03-31 → 2026-07-30 · 32 obs

○ 2026-03-29 16:53:20
● 2026-03-31 17:31:20
○ 2026-03-31 18:28:02
○ 2026-04-01 01:20:58
● 2026-04-01 02:07:32
○ 2026-04-01 13:19:44
○ 2026-06-19 03:06:26
● 2026-06-22 16:51:46
○ 2026-06-23 03:21:38
● 2026-06-23 18:48:44
● 2026-06-26 06:12:34
○ 2026-06-26 15:04:02
○ 2026-06-27 07:48:30
● 2026-06-28 16:23:22
○ 2026-06-28 17:21:30
● 2026-06-29 22:06:08
○ 2026-06-29 23:29:12
● 2026-07-28 12:20:52
○ 2026-07-28 18:14:18
● 2026-07-28 18:44:48
○ 2026-07-29 00:02:20
● 2026-07-29 02:03:08
○ 2026-07-29 04:34:06
● 2026-07-29 09:05:34
○ 2026-07-29 11:28:20
● 2026-07-29 14:58:06
○ 2026-07-30 01:23:36
● 2026-07-30 08:43:08
○ 2026-07-30 12:00:16
● 2026-07-30 14:46:26
○ 2026-07-30 19:36:54
○ 2026-08-11 17:41:02

○A13.32.179.132026-03-31 → 2026-07-30 · 32 obs

○A13.32.179.362026-03-31 → 2026-07-30 · 32 obs

○A13.32.179.792026-03-31 → 2026-07-30 · 32 obs

○A13.33.129.32026-04-22 → 2026-06-01 · 18 obs

○ 2026-04-18 10:43:38
● 2026-04-22 18:34:48
○ 2026-04-22 21:03:46
○ 2026-04-22 22:40:04
● 2026-04-22 23:28:44
○ 2026-04-23 02:35:30
○ 2026-05-09 10:01:30
● 2026-05-10 01:43:42
○ 2026-05-10 02:27:06
○ 2026-05-13 00:48:30
● 2026-05-13 07:40:28
○ 2026-05-13 12:34:18
● 2026-05-13 18:08:04
○ 2026-05-13 23:59:50
○ 2026-06-01 16:24:20
● 2026-06-01 22:01:18
○ 2026-06-01 23:03:50
○ 2026-08-11 17:41:02

○A13.33.129.472026-04-22 → 2026-06-01 · 18 obs

○A13.33.129.602026-04-22 → 2026-06-01 · 18 obs

○A13.33.129.852026-04-22 → 2026-06-01 · 18 obs

○A13.33.131.382026-07-01 → 2026-07-27 · 28 obs

○ 2026-07-01 08:07:22
● 2026-07-01 23:17:24
○ 2026-07-01 23:48:26
● 2026-07-03 02:42:08
○ 2026-07-03 17:00:30
● 2026-07-13 17:59:52
○ 2026-07-13 18:40:56
● 2026-07-14 06:08:52
○ 2026-07-14 07:22:02
● 2026-07-23 06:04:58
○ 2026-07-23 10:39:18
● 2026-07-24 04:41:30
○ 2026-07-24 18:31:12
● 2026-07-25 08:48:40
○ 2026-07-25 09:28:10
● 2026-07-25 11:32:06
○ 2026-07-25 13:32:22
● 2026-07-25 18:07:42
○ 2026-07-25 23:44:10
● 2026-07-26 04:07:24
○ 2026-07-26 16:00:12
● 2026-07-26 16:53:16
○ 2026-07-26 20:59:36
● 2026-07-26 22:09:02
○ 2026-07-27 09:01:16
● 2026-07-27 21:38:06
○ 2026-07-28 03:01:58
○ 2026-08-11 17:41:02

○A13.33.131.392026-07-01 → 2026-07-27 · 28 obs

○A13.33.131.432026-07-01 → 2026-07-27 · 28 obs

○A13.33.131.482026-07-01 → 2026-07-27 · 28 obs

○A13.33.235.1042026-03-22 → 2026-08-07 · 22 obs

○ 2026-03-21 23:04:08
● 2026-03-22 10:08:28
○ 2026-03-22 14:32:40
○ 2026-03-24 06:15:30
● 2026-03-24 11:33:48
○ 2026-03-24 22:01:48
○ 2026-03-27 08:52:22
● 2026-07-12 23:51:54
○ 2026-07-13 06:07:54
● 2026-07-13 15:32:46
● 2026-07-14 07:22:02
○ 2026-07-14 11:02:18
● 2026-07-14 20:22:56
● 2026-07-15 15:59:08
○ 2026-07-15 16:31:50
● 2026-07-15 21:04:24
○ 2026-07-16 13:41:48
● 2026-07-19 14:02:40
○ 2026-07-19 20:14:02
● 2026-08-07 22:44:58
○ 2026-08-08 00:07:30
○ 2026-08-11 17:41:02

○A13.33.235.182026-03-22 → 2026-08-07 · 22 obs

○A13.33.235.732026-03-22 → 2026-08-07 · 22 obs

○A13.33.235.82026-03-22 → 2026-08-07 · 22 obs

○A13.35.107.1092026-07-12 → 2026-08-02 · 62 obs

○ 2026-07-12 08:03:58
● 2026-07-12 18:22:26
○ 2026-07-12 21:57:16
● 2026-07-12 23:02:34
○ 2026-07-12 23:51:54
● 2026-07-13 18:40:56
● 2026-07-14 11:02:18
○ 2026-07-15 00:09:58
○ 2026-07-15 18:36:56
● 2026-07-16 21:24:40
● 2026-07-17 11:36:08
○ 2026-07-17 19:32:04
● 2026-07-18 08:35:42
● 2026-07-19 01:54:32
○ 2026-07-19 03:33:34
● 2026-07-19 06:56:32
○ 2026-07-19 11:11:20
● 2026-07-20 03:32:20
○ 2026-07-20 04:06:50
● 2026-07-20 14:37:08
○ 2026-07-20 16:55:18
● 2026-07-20 20:48:16
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● 2026-07-21 23:24:08
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● 2026-07-23 17:39:14
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● 2026-07-26 16:00:12
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● 2026-07-27 09:01:16
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● 2026-07-27 13:31:44
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● 2026-07-28 03:01:58
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● 2026-07-28 11:35:18
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● 2026-07-29 00:02:20
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○ 2026-08-01 14:29:12
● 2026-08-02 02:57:32
○ 2026-08-02 08:26:38
○ 2026-08-11 17:41:02

○A13.35.107.462026-07-12 → 2026-08-02 · 62 obs

○A13.35.107.682026-07-12 → 2026-08-02 · 62 obs

○A13.35.107.702026-07-12 → 2026-08-02 · 62 obs

○A13.35.163.1042026-05-27 → 2026-06-03 · 10 obs

○ 2026-05-20 04:45:34
● 2026-05-27 07:52:58
○ 2026-05-27 09:58:32
○ 2026-05-31 17:58:58
● 2026-06-01 07:05:40
○ 2026-06-01 10:43:44
○ 2026-06-03 11:45:34
● 2026-06-03 13:45:48
○ 2026-06-03 14:51:24
○ 2026-08-11 17:41:02

○A13.35.163.1182026-05-27 → 2026-06-03 · 10 obs

○A13.35.163.1292026-05-27 → 2026-06-03 · 10 obs

○A13.35.163.502026-05-27 → 2026-06-03 · 10 obs

○A143.204.68.592026-02-18 → 2026-03-26 · 17 obs

○ 2026-02-18 04:48:26
● 2026-02-18 22:51:36
○ 2026-02-19 04:37:34
○ 2026-02-19 13:09:56
● 2026-02-20 04:37:46
● 2026-02-21 11:02:16
○ 2026-02-22 05:15:06
● 2026-02-22 23:12:00
○ 2026-02-24 10:14:10
○ 2026-02-25 05:27:42
● 2026-02-25 17:20:36
● 2026-03-08 06:12:52
○ 2026-03-09 00:13:40
○ 2026-03-26 03:46:00
● 2026-03-26 04:18:18
○ 2026-03-26 05:29:14
○ 2026-08-11 17:41:02

○A143.204.68.642026-02-18 → 2026-03-26 · 17 obs

○A143.204.68.672026-02-18 → 2026-03-26 · 17 obs

○A143.204.68.692026-02-18 → 2026-03-26 · 17 obs

○A18.164.96.1002026-02-16 → 2026-03-22 · 18 obs

○ 2017-09-05 12:40:50
● 2026-02-16 07:21:16
○ 2026-02-16 10:46:06
○ 2026-03-07 11:19:00
● 2026-03-08 00:11:02
○ 2026-03-08 06:12:52
○ 2026-03-13 03:26:08
● 2026-03-13 09:45:50
○ 2026-03-13 14:01:36
○ 2026-03-14 08:13:46
● 2026-03-14 13:08:10
○ 2026-03-14 16:17:02
○ 2026-03-22 10:08:28
● 2026-03-22 14:32:40
○ 2026-03-22 15:48:24
● 2026-03-22 16:21:26
○ 2026-03-22 22:28:58
○ 2026-08-11 17:41:02

○A18.164.96.442026-02-16 → 2026-03-22 · 18 obs

○A18.164.96.502026-02-16 → 2026-03-22 · 18 obs

○A18.164.96.92026-02-16 → 2026-03-22 · 18 obs

○A18.165.201.1012026-02-16 → 2026-06-30 · 17 obs

○ 2026-02-16 07:21:16
● 2026-02-16 10:46:06
● 2026-02-18 04:48:26
○ 2026-02-18 22:51:36
○ 2026-03-11 08:49:26
● 2026-03-12 04:58:32
○ 2026-03-13 09:45:50
○ 2026-03-16 21:25:40
● 2026-03-17 03:51:32
● 2026-03-20 06:30:02
○ 2026-03-21 02:28:14
○ 2026-06-08 23:06:48
● 2026-06-10 03:10:18
○ 2026-06-10 16:00:14
● 2026-06-30 05:11:48
○ 2026-06-30 05:59:32
○ 2026-08-11 17:41:02

○A18.165.201.172026-02-16 → 2026-06-30 · 17 obs

○A18.165.201.302026-02-16 → 2026-06-30 · 17 obs

○A18.165.201.72026-02-16 → 2026-06-30 · 17 obs

○A18.239.168.172026-03-09 → 2026-05-19 · 17 obs

○ 2026-03-08 06:12:52
● 2026-03-09 00:13:40
○ 2026-03-09 03:02:40
○ 2026-04-22 18:34:48
● 2026-04-22 21:03:46
○ 2026-04-22 23:28:44
○ 2026-04-27 02:41:54
● 2026-04-27 12:33:48
○ 2026-04-27 17:18:08
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● 2026-05-06 03:41:48
● 2026-05-06 09:49:58
○ 2026-05-06 14:22:50
○ 2026-05-19 12:14:22
● 2026-05-19 16:39:50
○ 2026-05-19 20:16:00
○ 2026-08-11 17:41:02

○A18.239.168.192026-03-09 → 2026-05-19 · 17 obs

○A18.239.168.22026-03-09 → 2026-05-19 · 17 obs

○A18.239.168.482026-03-09 → 2026-05-19 · 17 obs

○A18.239.36.522026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-04 13:39:06
● 2026-04-05 16:09:12
○ 2026-04-05 16:45:48
○ 2026-08-11 17:41:02

○A18.239.36.752026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-04 13:39:06
● 2026-04-05 16:09:12
○ 2026-04-05 16:45:48
○ 2026-08-11 17:41:02

○A18.239.36.922026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-04 13:39:06
● 2026-04-05 16:09:12
○ 2026-04-05 16:45:48
○ 2026-08-11 17:41:02

○A18.239.36.932026-04-05 → 2026-04-05 · 4 obs

○ 2026-04-04 13:39:06
● 2026-04-05 16:09:12
○ 2026-04-05 16:45:48
○ 2026-08-11 17:41:02

●A18.67.130.192026-03-28 → 2026-08-11 · 68 obs

○ 2026-03-27 08:52:22
● 2026-03-28 12:53:46
○ 2026-03-28 13:38:28
● 2026-03-28 15:16:14
● 2026-03-29 14:36:32
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● 2026-06-30 23:06:50
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● 2026-07-07 14:21:52
● 2026-07-14 02:43:46
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● 2026-07-19 11:11:20
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● 2026-07-19 20:14:02
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● 2026-07-20 04:06:50
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● 2026-08-03 22:16:34
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● 2026-08-07 01:50:38
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● 2026-08-08 00:07:30
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● 2026-08-08 12:14:22
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● 2026-08-08 19:58:36
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● 2026-08-10 10:07:30
○ 2026-08-10 22:24:44
● 2026-08-10 23:38:00
● 2026-08-11 17:41:02

●A18.67.130.432026-03-28 → 2026-08-11 · 68 obs

●A18.67.130.672026-03-28 → 2026-08-11 · 68 obs

●A18.67.130.872026-03-28 → 2026-08-11 · 68 obs

○A18.67.233.502026-06-01 → 2026-06-03 · 7 obs

○ 2026-06-01 10:43:44
● 2026-06-01 16:24:20
○ 2026-06-01 22:01:18
○ 2026-06-02 23:20:40
● 2026-06-03 05:27:36
○ 2026-06-03 06:34:18
○ 2026-08-11 17:41:02

○A18.67.233.772026-06-01 → 2026-06-03 · 7 obs

○ 2026-06-01 10:43:44
● 2026-06-01 16:24:20
○ 2026-06-01 22:01:18
○ 2026-06-02 23:20:40
● 2026-06-03 05:27:36
○ 2026-06-03 06:34:18
○ 2026-08-11 17:41:02

○A18.67.233.812026-06-01 → 2026-06-03 · 7 obs

○ 2026-06-01 10:43:44
● 2026-06-01 16:24:20
○ 2026-06-01 22:01:18
○ 2026-06-02 23:20:40
● 2026-06-03 05:27:36
○ 2026-06-03 06:34:18
○ 2026-08-11 17:41:02

○A18.67.233.932026-06-01 → 2026-06-03 · 7 obs

○ 2026-06-01 10:43:44
● 2026-06-01 16:24:20
○ 2026-06-01 22:01:18
○ 2026-06-02 23:20:40
● 2026-06-03 05:27:36
○ 2026-06-03 06:34:18
○ 2026-08-11 17:41:02

○A3.167.56.252026-02-19 → 2026-08-10 · 38 obs

○ 2026-02-16 07:21:16
○ 2026-02-18 22:51:36
● 2026-02-19 04:37:34
○ 2026-02-19 13:09:56
○ 2026-03-09 03:02:40
● 2026-03-11 08:49:26
○ 2026-03-12 04:58:32
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● 2026-06-18 22:43:08
● 2026-07-05 04:48:20
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● 2026-07-10 12:39:30
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● 2026-07-11 10:24:06
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● 2026-08-03 04:13:54
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● 2026-08-03 18:35:00
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● 2026-08-04 07:00:44
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● 2026-08-05 04:50:46
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● 2026-08-06 13:27:34
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● 2026-08-06 22:20:00
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● 2026-08-07 18:56:08
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● 2026-08-08 07:06:02
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● 2026-08-08 19:23:54
○ 2026-08-08 19:58:36
● 2026-08-10 08:11:16
○ 2026-08-10 10:07:30
● 2026-08-10 22:24:44
○ 2026-08-10 23:38:00
○ 2026-08-11 17:41:02

○A3.167.56.392026-02-19 → 2026-08-10 · 38 obs

○A3.167.56.712026-02-19 → 2026-08-10 · 38 obs

○A3.167.56.842026-02-19 → 2026-08-10 · 38 obs

○A3.174.141.122026-03-15 → 2026-03-21 · 10 obs

○ 2026-03-14 16:17:02
● 2026-03-15 05:11:54
○ 2026-03-15 10:10:36
○ 2026-03-16 03:37:28
● 2026-03-16 04:47:28
○ 2026-03-16 09:37:58
○ 2026-03-20 23:03:52
● 2026-03-21 02:28:14
○ 2026-03-21 23:04:08
○ 2026-08-11 17:41:02

○A3.174.141.1252026-03-15 → 2026-03-21 · 10 obs

○A3.174.141.522026-03-15 → 2026-03-21 · 10 obs

○A3.174.141.72026-03-15 → 2026-03-21 · 10 obs

○A50.63.202.162017-09-05 → 2017-09-05 · 4 obs

○ 2016-12-05 22:22:58
● 2017-09-05 12:40:50
○ 2026-02-16 07:21:16
○ 2026-08-11 17:41:02

○A50.63.202.332016-12-05 → 2016-12-05 · 4 obs

○ 2016-04-25 18:19:10
● 2016-12-05 22:22:58
○ 2017-09-05 12:40:50
○ 2026-08-11 17:41:02

○A52.85.47.1152026-03-26 → 2026-07-25 · 20 obs

○ 2026-03-25 16:32:52
● 2026-03-26 03:46:00
○ 2026-03-26 04:18:18
● 2026-03-26 05:29:14
● 2026-05-03 17:58:42
○ 2026-05-07 00:31:04
● 2026-05-07 15:43:04
● 2026-05-18 12:18:12
○ 2026-05-18 17:15:56
○ 2026-06-16 14:18:00
● 2026-06-19 03:06:26
● 2026-06-23 03:21:38
○ 2026-06-26 13:56:34
● 2026-06-30 05:59:32
○ 2026-06-30 11:13:36
● 2026-06-30 14:41:54
○ 2026-06-30 23:06:50
● 2026-07-25 15:22:38
○ 2026-07-25 17:09:50
○ 2026-08-11 17:41:02

○A52.85.47.292026-03-26 → 2026-07-25 · 20 obs

○A52.85.47.302026-03-26 → 2026-07-25 · 20 obs

○A52.85.47.472026-03-26 → 2026-07-25 · 20 obs

○A69.172.201.2082015-07-07 → 2016-02-05 · 4 obs

● 2015-07-07 13:28:26
● 2016-02-05 12:58:08
○ 2016-04-25 18:19:10
○ 2026-08-11 17:41:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, d.gtld-servers.net, j.gtld-servers.net, c.gtld-servers.net...	-
teacherstack.com	ns-91.awsdns-11.com, ns-573.awsdns-07.net, ns-1539.awsdns-00.co.uk, ns-1430.awsdns-50.org	2 records

✅ Authoritative Response

Server:205.251.197.150

NS records: ns-91.awsdns-11.com, ns-573.awsdns-07.net, ns-1539.awsdns-00.co.uk, ns-1430.awsdns-50.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teacherstack.com (unsigned zone)

⏱️ Timing

Total: 1056ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.167.56.25, 3.167.56.39...`
NS	4	`ns-1430.awsdns-50.org, ns-1539.awsdns-00.co.uk...`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=p2N0rsuVGfH-xMq, v=spf1 include:_spf.google.com include:a`
SOA	1	`ns-573.awsdns-07.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-91.awsdns-11.com, ns-91.awsdns-11.com)

Analysis

Hierarchy

teacherstack.com is a parent domain of app.teacherstack.com.

IP Addresses

teacherstack.com has four IP addresses: 18.67.130.19, 18.67.130.43, 18.67.130.67 and 18.67.130.87.

Name Servers

The domain teacherstack.com is delegated to these four name servers: ns-91.awsdns-11.com, ns-573.awsdns-07.net, ns-1430.awsdns-50.org and ns-1539.awsdns-00.co.uk.

teacherstack.com shares at least some of its name servers with other domains, including 221.124.3.in-addr.arpa, myanmarvp.com, d11447mk7gle1e.cloudfront.net and two others.

These name servers are frequently seen alongside the name servers ns1-24-eu-central-1.ec2-rdns.amazonaws.com, ns2-24-eu-central-1.ec2-rdns.amazonaws.com, ns3-24-eu-central-1.ec2-rdns.amazonaws.com and ns4-24-eu-central-1.ec2-rdns.amazonaws.com.

The host names ns-91.awsdns-11.com, ns-573.awsdns-07.net, ns-1430.awsdns-50.org and ns-1539.awsdns-00.co.uk each resolve to two IP addresses: ns-91.awsdns-11.com resolves to 205.251.192.91 and 2600:9000:5300:5b00::1; ns-573.awsdns-07.net resolves to 205.251.194.61 and 2600:9000:5302:3d00::1; ns-1430.awsdns-50.org resolves to 205.251.197.150 and 2600:9000:5305:9600::1; ns-1539.awsdns-00.co.uk resolves to 205.251.198.3 and 2600:9000:5306:300::1.

Mail Servers

teacherstack.com routes its mail through a single mail server, smtp.google.com.

teacherstack.com has the same mail server arrangement as a number of other domains, for example windcreekonline.com, ozmedia.net, minimalpiercing.com and two more.

teacherstack.com shares at least some of its mail servers with other domains — for example cadteacher.com, vgroup.biz, nchsboosters.com and two more.

These mail servers tend to be used in conjunction with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two additional mail servers.

smtp.google.com directs to 9 IP numbers, including 172.253.63.26, 172.253.63.27 and 172.253.115.26, along with 6 other.