openknowl.com - dns.ninja

`openknowl.com`

DNSSEC	⚠️ Not signed
A	3.170.19.3^{🇺🇸 Amazon3.170.19.0/24}
		PTR	`server-3-170-19-3.iad61.r.cloudfront.net`
A	3.170.19.47^{🇺🇸 Amazon3.170.19.0/24}
A	3.170.19.86^{🇺🇸 Amazon3.170.19.0/24}
A	3.170.19.114^{🇺🇸 Amazon3.170.19.0/24}
NS	`ns-1851.awsdns-39.co.uk` ⭐
		A	2600:9000:5307:3b00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1851.awsdns-39.co.uk`
		A	205.251.199.59^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1851.awsdns-39.co.uk`
NS	`ns-1378.awsdns-44.org`
		A	2600:9000:5305:6200::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1378.awsdns-44.org`
		A	205.251.197.98^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1378.awsdns-44.org`
NS	`ns-245.awsdns-30.com`
		A	2600:9000:5300:f500::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-245.awsdns-30.com`
		A	205.251.192.245^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-245.awsdns-30.com`
NS	`ns-781.awsdns-33.net`
		A	2600:9000:5303:d00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-781.awsdns-33.net`
		A	205.251.195.13^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-781.awsdns-33.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
MX	`mail.openknowl.com`⁽¹⁵⁾
TXT	`MS=ms87836337`
TXT	`_5a7z1sz4y5tkqob901epi65ynihf5hc`
TXT	`_9qi51zwhqdrifpxrjpxd3z46emzuhx4`
TXT	`google-site-verification=kAzh_iFu1ShJzOudeHGNm--EzGxjkUPLimw6GjaMEQU`
TXT	`v=spf1 include:servers.mcsv.net ?all`
SOA	`ns-1851.awsdns-39.co.uk`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=1786742139

Subdomains

mail.openknowl.com

Same first word

openknowl.com

DNS History

117 records (14 active, 103 former)

●NSns-1378.awsdns-44.org2026-02-18 → 2026-08-14 · 3 obs

○ 2018-10-05 15:53:18
● 2026-02-18 17:29:42
● 2026-08-14 21:39:44

○NSns-1438.awsdns-51.org2018-10-05 → 2018-10-05 · 4 obs

○ 2017-01-31 23:14:16
● 2018-10-05 15:53:18
○ 2026-02-18 17:29:42
○ 2026-08-14 21:39:44

●NSns-1851.awsdns-39.co.uk2026-02-18 → 2026-08-14 · 3 obs

○ 2018-10-05 15:53:18
● 2026-02-18 17:29:42
● 2026-08-14 21:39:44

○NSns-195.awsdns-24.com2018-10-05 → 2018-10-05 · 4 obs

○ 2017-01-31 23:14:16
● 2018-10-05 15:53:18
○ 2026-02-18 17:29:42
○ 2026-08-14 21:39:44

○NSns-2004.awsdns-58.co.uk2018-10-05 → 2018-10-05 · 4 obs

○ 2017-01-31 23:14:16
● 2018-10-05 15:53:18
○ 2026-02-18 17:29:42
○ 2026-08-14 21:39:44

●NSns-245.awsdns-30.com2026-02-18 → 2026-08-14 · 3 obs

○ 2018-10-05 15:53:18
● 2026-02-18 17:29:42
● 2026-08-14 21:39:44

●NSns-781.awsdns-33.net2026-02-18 → 2026-08-14 · 3 obs

○ 2018-10-05 15:53:18
● 2026-02-18 17:29:42
● 2026-08-14 21:39:44

○NSns-924.awsdns-51.net2018-10-05 → 2018-10-05 · 4 obs

○ 2017-01-31 23:14:16
● 2018-10-05 15:53:18
○ 2026-02-18 17:29:42
○ 2026-08-14 21:39:44

○NSns1.linode.com2015-06-28 → 2017-01-31 · 4 obs

● 2015-06-28 21:56:32
● 2017-01-31 23:14:16
○ 2018-10-05 15:53:18
○ 2026-08-14 21:39:44

○NSns2.linode.com2015-06-28 → 2017-01-31 · 4 obs

● 2015-06-28 21:56:32
● 2017-01-31 23:14:16
○ 2018-10-05 15:53:18
○ 2026-08-14 21:39:44

○NSns3.linode.com2015-06-28 → 2017-01-31 · 4 obs

● 2015-06-28 21:56:32
● 2017-01-31 23:14:16
○ 2018-10-05 15:53:18
○ 2026-08-14 21:39:44

○NSns4.linode.com2015-06-28 → 2017-01-31 · 4 obs

● 2015-06-28 21:56:32
● 2017-01-31 23:14:16
○ 2018-10-05 15:53:18
○ 2026-08-14 21:39:44

○NSns5.linode.com2015-06-28 → 2017-01-31 · 4 obs

● 2015-06-28 21:56:32
● 2017-01-31 23:14:16
○ 2018-10-05 15:53:18
○ 2026-08-14 21:39:44

●MXalt1.aspmx.l.google.com2015-06-28 → 2026-08-14 · 7 obs

● 2015-06-28 21:56:32
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

●MXalt2.aspmx.l.google.com2015-06-28 → 2026-08-14 · 7 obs

● 2015-06-28 21:56:32
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

●MXalt3.aspmx.l.google.com2015-06-28 → 2026-08-14 · 7 obs

● 2015-06-28 21:56:32
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

●MXalt4.aspmx.l.google.com2015-06-28 → 2026-08-14 · 7 obs

● 2015-06-28 21:56:32
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

●MXaspmx.l.google.com2015-06-28 → 2026-08-14 · 7 obs

● 2015-06-28 21:56:32
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

●MXmail.openknowl.com2026-02-18 → 2026-08-14 · 8 obs

○ 2015-06-28 21:56:32
● 2026-02-18 17:29:42
● 2026-06-05 21:52:50
○ 2026-06-06 00:14:26
● 2026-06-06 02:17:42
○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
● 2026-08-14 21:39:44

○A106.185.47.102015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 21:56:32
○ 2015-11-04 23:40:46
○ 2026-08-14 21:39:44

○A106.186.123.2442015-11-04 → 2018-10-05 · 5 obs

○ 2015-06-28 21:56:32
● 2015-11-04 23:40:46
● 2018-10-05 15:53:18
○ 2026-02-18 17:29:42
○ 2026-08-14 21:39:44

○A108.138.103.1012026-06-10 → 2026-08-13 · 24 obs

○ 2026-06-10 04:01:36
● 2026-06-10 06:39:44
● 2026-06-10 14:00:18
○ 2026-06-10 14:37:38
● 2026-06-10 16:20:40
○ 2026-06-13 18:46:26
○ 2026-06-16 14:53:04
● 2026-07-01 03:21:12
● 2026-07-24 01:23:28
○ 2026-07-24 05:53:18
● 2026-07-28 03:47:42
○ 2026-07-31 18:48:32
○ 2026-08-12 13:15:00
● 2026-08-12 14:53:30
○ 2026-08-12 16:45:40
● 2026-08-12 17:32:28
○ 2026-08-12 20:21:04
● 2026-08-12 21:39:04
○ 2026-08-13 00:51:16
● 2026-08-13 02:24:44
○ 2026-08-13 17:02:50
● 2026-08-13 17:36:10
○ 2026-08-14 20:32:00
○ 2026-08-14 21:39:44

○A108.138.103.1052026-06-10 → 2026-08-13 · 24 obs

○A108.138.103.1142026-06-10 → 2026-08-13 · 24 obs

○A108.138.103.422026-06-10 → 2026-08-13 · 24 obs

○A108.139.163.122026-07-03 → 2026-07-27 · 18 obs

○ 2026-07-02 21:28:18
● 2026-07-03 00:03:22
○ 2026-07-03 02:06:06
● 2026-07-03 04:14:16
○ 2026-07-03 06:59:26
○ 2026-07-03 15:41:34
● 2026-07-13 21:44:40
○ 2026-07-14 14:56:44
● 2026-07-24 05:53:18
○ 2026-07-24 15:16:40
● 2026-07-25 03:32:40
● 2026-07-26 07:46:26
○ 2026-07-26 19:14:36
● 2026-07-27 02:56:38
○ 2026-07-27 07:54:48
● 2026-07-27 17:52:36
○ 2026-07-28 03:47:42
○ 2026-08-14 21:39:44

○A108.139.163.1282026-07-03 → 2026-07-27 · 18 obs

○A108.139.163.382026-07-03 → 2026-07-27 · 18 obs

○A108.139.163.412026-07-03 → 2026-07-27 · 18 obs

○A108.159.15.1102026-05-26 → 2026-05-26 · 4 obs

○ 2026-05-26 21:18:00
● 2026-05-26 22:19:58
○ 2026-05-27 00:07:28
○ 2026-08-14 21:39:44

○A108.159.15.142026-05-26 → 2026-05-26 · 4 obs

○ 2026-05-26 21:18:00
● 2026-05-26 22:19:58
○ 2026-05-27 00:07:28
○ 2026-08-14 21:39:44

○A108.159.15.232026-05-26 → 2026-05-26 · 4 obs

○ 2026-05-26 21:18:00
● 2026-05-26 22:19:58
○ 2026-05-27 00:07:28
○ 2026-08-14 21:39:44

○A108.159.15.312026-05-26 → 2026-05-26 · 4 obs

○ 2026-05-26 21:18:00
● 2026-05-26 22:19:58
○ 2026-05-27 00:07:28
○ 2026-08-14 21:39:44

○A13.227.207.1002026-03-29 → 2026-06-10 · 17 obs

○ 2026-03-23 03:23:40
● 2026-03-29 12:05:18
● 2026-03-29 19:27:26
○ 2026-03-29 20:07:48
○ 2026-04-23 07:56:10
● 2026-04-23 11:17:02
● 2026-05-07 15:20:26
○ 2026-05-09 10:27:10
○ 2026-05-19 10:36:40
● 2026-05-19 13:37:28
● 2026-05-26 21:18:00
○ 2026-05-26 22:19:58
○ 2026-06-09 20:11:00
● 2026-06-10 03:09:18
● 2026-06-10 04:01:36
○ 2026-06-10 06:39:44
○ 2026-08-14 21:39:44

○A13.227.207.232026-03-29 → 2026-06-10 · 17 obs

○A13.227.207.332026-03-29 → 2026-06-10 · 17 obs

○A13.227.207.492026-03-29 → 2026-06-10 · 17 obs

○A13.249.182.422026-02-18 → 2026-08-14 · 21 obs

○ 2018-10-05 15:53:18
● 2026-02-18 17:29:42
● 2026-02-20 10:35:50
○ 2026-02-24 14:36:24
○ 2026-03-04 13:04:24
● 2026-07-03 15:41:34
○ 2026-07-05 05:45:16
○ 2026-07-13 05:01:42
● 2026-07-18 02:27:36
○ 2026-07-21 17:25:14
○ 2026-07-25 16:08:22
● 2026-07-29 11:19:56
● 2026-08-10 19:42:58
○ 2026-08-11 01:51:10
● 2026-08-12 05:51:58
○ 2026-08-12 06:36:34
● 2026-08-12 20:21:04
○ 2026-08-12 21:09:02
● 2026-08-14 20:32:00
○ 2026-08-14 21:39:40
○ 2026-08-14 21:39:44

○A13.249.182.522026-02-18 → 2026-08-14 · 21 obs

○A13.249.182.672026-02-18 → 2026-08-14 · 21 obs

○A13.249.182.882026-02-18 → 2026-08-14 · 21 obs

○A13.33.109.392026-05-11 → 2026-05-20 · 16 obs

○ 2026-05-10 15:40:32
● 2026-05-11 03:16:24
○ 2026-05-11 04:28:28
○ 2026-05-11 12:51:56
● 2026-05-11 14:54:54
○ 2026-05-11 16:04:02
○ 2026-05-16 06:59:22
● 2026-05-16 08:01:04
○ 2026-05-16 10:48:46
○ 2026-05-19 13:37:28
● 2026-05-19 16:40:32
○ 2026-05-19 17:13:36
○ 2026-05-20 05:24:36
● 2026-05-20 06:52:48
○ 2026-05-20 07:48:30
○ 2026-08-14 21:39:44

○A13.33.109.402026-05-11 → 2026-05-20 · 16 obs

○A13.33.109.452026-05-11 → 2026-05-20 · 16 obs

○A13.33.109.492026-05-11 → 2026-05-20 · 16 obs

○A13.33.129.1112026-04-22 → 2026-06-01 · 18 obs

○ 2026-04-22 14:10:24
● 2026-04-22 15:44:24
● 2026-04-22 20:18:32
○ 2026-04-22 22:31:34
○ 2026-05-06 00:29:58
● 2026-05-07 02:08:54
○ 2026-05-07 04:51:52
○ 2026-05-09 11:56:04
● 2026-05-09 18:12:16
○ 2026-05-10 15:40:32
○ 2026-05-16 23:22:00
● 2026-05-17 03:50:26
● 2026-05-18 11:19:00
○ 2026-05-18 13:25:20
○ 2026-06-01 21:11:18
● 2026-06-01 23:39:24
○ 2026-06-02 00:17:38
○ 2026-08-14 21:39:44

○A13.33.129.332026-04-22 → 2026-06-01 · 18 obs

○A13.33.129.562026-04-22 → 2026-06-01 · 18 obs

○A13.33.129.582026-04-22 → 2026-06-01 · 18 obs

○A13.33.131.102026-07-01 → 2026-07-01 · 4 obs

○ 2026-07-01 03:21:12
● 2026-07-01 23:16:02
○ 2026-07-02 00:33:18
○ 2026-08-14 21:39:44

○A13.33.131.442026-07-01 → 2026-07-01 · 4 obs

○ 2026-07-01 03:21:12
● 2026-07-01 23:16:02
○ 2026-07-02 00:33:18
○ 2026-08-14 21:39:44

○A13.33.131.512026-07-01 → 2026-07-01 · 4 obs

○ 2026-07-01 03:21:12
● 2026-07-01 23:16:02
○ 2026-07-02 00:33:18
○ 2026-08-14 21:39:44

○A13.33.131.922026-07-01 → 2026-07-01 · 4 obs

○ 2026-07-01 03:21:12
● 2026-07-01 23:16:02
○ 2026-07-02 00:33:18
○ 2026-08-14 21:39:44

○A13.33.153.1282026-02-24 → 2026-07-10 · 17 obs

○ 2026-02-20 10:35:50
● 2026-02-24 14:36:24
● 2026-02-27 08:28:50
○ 2026-03-03 00:13:26
○ 2026-03-07 00:23:48
● 2026-03-08 00:43:12
● 2026-03-23 03:23:40
○ 2026-03-29 12:05:18
● 2026-03-30 00:24:42
● 2026-04-13 14:14:00
○ 2026-04-14 23:18:54
○ 2026-06-28 13:11:28
● 2026-06-30 18:21:58
○ 2026-06-30 23:39:18
● 2026-07-10 20:02:32
○ 2026-07-10 21:32:08
○ 2026-08-14 21:39:44

○A13.33.153.232026-02-24 → 2026-07-10 · 17 obs

○A13.33.153.42026-02-24 → 2026-07-10 · 17 obs

○A13.33.153.772026-02-24 → 2026-07-10 · 17 obs

○A13.33.82.142026-04-20 → 2026-08-02 · 18 obs

○ 2026-04-20 13:10:44
● 2026-04-20 18:25:46
○ 2026-04-20 20:59:26
○ 2026-04-21 06:50:36
● 2026-04-21 08:23:28
○ 2026-04-21 10:16:04
○ 2026-04-24 02:25:46
● 2026-04-24 05:19:42
○ 2026-04-24 08:05:30
○ 2026-04-27 10:11:02
● 2026-04-27 10:47:52
○ 2026-04-27 16:01:40
○ 2026-05-09 20:36:20
● 2026-05-09 21:40:28
○ 2026-05-09 23:16:56
● 2026-08-02 17:52:50
○ 2026-08-02 23:49:38
○ 2026-08-14 21:39:44

○A13.33.82.272026-04-20 → 2026-08-02 · 18 obs

○A13.33.82.582026-04-20 → 2026-08-02 · 18 obs

○A13.33.82.92026-04-20 → 2026-08-02 · 18 obs

○A13.35.163.282026-05-27 → 2026-06-06 · 17 obs

○ 2026-05-27 07:12:38
● 2026-05-27 08:52:04
● 2026-05-27 09:34:20
○ 2026-05-27 10:10:48
○ 2026-05-27 21:21:14
● 2026-05-27 23:04:42
○ 2026-05-28 01:21:16
● 2026-05-28 04:13:12
○ 2026-05-28 09:06:12
○ 2026-05-28 19:41:06
● 2026-05-28 21:41:10
○ 2026-05-28 23:48:36
○ 2026-06-06 08:48:10
● 2026-06-06 09:56:54
● 2026-06-06 11:52:04
○ 2026-06-06 13:39:04
○ 2026-08-14 21:39:44

○A13.35.163.432026-05-27 → 2026-06-06 · 17 obs

○A13.35.163.952026-05-27 → 2026-06-06 · 17 obs

○A13.35.163.962026-05-27 → 2026-06-06 · 17 obs

○A3.160.188.242026-05-27 → 2026-06-06 · 15 obs

○ 2026-05-26 22:19:58
● 2026-05-27 00:07:28
● 2026-05-27 00:45:54
○ 2026-05-27 01:17:38
○ 2026-05-27 03:01:36
● 2026-05-27 03:43:54
● 2026-05-27 06:29:06
○ 2026-05-27 07:12:38
○ 2026-06-01 01:58:34
● 2026-06-01 02:30:58
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○A3.160.188.522026-05-27 → 2026-06-06 · 15 obs

○A3.160.188.852026-05-27 → 2026-06-06 · 15 obs

○A3.160.188.952026-05-27 → 2026-06-06 · 15 obs

○A3.162.174.1242026-05-19 → 2026-07-02 · 17 obs

○ 2026-05-18 13:25:20
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○A3.162.174.302026-05-19 → 2026-07-02 · 17 obs

○A3.162.174.572026-05-19 → 2026-07-02 · 17 obs

○A3.162.174.792026-05-19 → 2026-07-02 · 17 obs

○A3.163.10.1212026-04-22 → 2026-05-25 · 15 obs

○ 2026-04-21 10:16:04
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○A3.163.10.1242026-04-22 → 2026-05-25 · 15 obs

○A3.163.10.832026-04-22 → 2026-05-25 · 15 obs

○A3.163.10.92026-04-22 → 2026-05-25 · 15 obs

○A3.164.68.282026-06-02 → 2026-08-13 · 20 obs

○ 2026-06-02 22:36:22
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○A3.164.68.332026-06-02 → 2026-08-13 · 20 obs

○A3.164.68.502026-06-02 → 2026-08-13 · 20 obs

○A3.164.68.682026-06-02 → 2026-08-13 · 20 obs

○A3.166.135.1262026-04-12 → 2026-06-21 · 18 obs

○ 2026-03-31 18:07:28
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○A3.166.135.272026-04-12 → 2026-06-21 · 18 obs

○A3.166.135.722026-04-12 → 2026-06-21 · 18 obs

○A3.166.135.962026-04-12 → 2026-06-21 · 18 obs

○A3.166.192.112026-07-12 → 2026-08-01 · 17 obs

○ 2026-07-12 15:56:58
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○A3.166.192.252026-07-12 → 2026-08-01 · 17 obs

○A3.166.192.602026-07-12 → 2026-08-01 · 17 obs

○A3.166.192.922026-07-12 → 2026-08-01 · 17 obs

○A3.167.69.1272026-04-18 → 2026-04-19 · 7 obs

○ 2026-04-18 03:25:28
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○A3.167.69.52026-04-18 → 2026-04-19 · 7 obs

○ 2026-04-18 03:25:28
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○A3.167.69.592026-04-18 → 2026-04-19 · 7 obs

○ 2026-04-18 03:25:28
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○A3.167.69.622026-04-18 → 2026-04-19 · 7 obs

○ 2026-04-18 03:25:28
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●A3.170.19.1142026-03-03 → 2026-08-14 · 22 obs

○ 2026-02-27 08:28:50
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●A3.170.19.32026-03-03 → 2026-08-14 · 22 obs

●A3.170.19.472026-03-03 → 2026-08-14 · 22 obs

●A3.170.19.862026-03-03 → 2026-08-14 · 22 obs

○A3.174.26.1142026-05-16 → 2026-06-08 · 18 obs

○ 2026-05-16 10:48:46
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○A3.174.26.1202026-05-16 → 2026-06-08 · 18 obs

○A3.174.26.512026-05-16 → 2026-06-08 · 18 obs

○A3.174.26.682026-05-16 → 2026-06-08 · 18 obs

○A3.174.29.1052026-04-12 → 2026-04-20 · 17 obs

○ 2026-04-12 10:08:56
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○A3.174.29.1292026-04-12 → 2026-04-20 · 17 obs

○A3.174.29.232026-04-12 → 2026-04-20 · 17 obs

○A3.174.29.612026-04-12 → 2026-04-20 · 17 obs

○A52.84.174.1082026-07-25 → 2026-07-28 · 18 obs

○ 2026-07-25 16:08:22
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○A52.84.174.1172026-07-25 → 2026-07-28 · 18 obs

○A52.84.174.312026-07-25 → 2026-07-28 · 18 obs

○A52.84.174.512026-07-25 → 2026-07-28 · 18 obs

○A54.192.151.1292026-05-27 → 2026-06-05 · 18 obs

○ 2026-05-27 10:10:48
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○A54.192.151.322026-05-27 → 2026-06-05 · 18 obs

○A54.192.151.652026-05-27 → 2026-06-05 · 18 obs

○A54.192.151.82026-05-27 → 2026-06-05 · 18 obs

○A54.230.79.1002026-03-31 → 2026-07-30 · 17 obs

○ 2026-03-30 00:24:42
● 2026-03-31 12:31:08
● 2026-03-31 14:54:44
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○ 2026-06-17 18:46:26
● 2026-06-18 20:27:24
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● 2026-06-26 14:10:44
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○ 2026-06-30 06:09:18
● 2026-07-28 08:01:48
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● 2026-07-30 11:46:30
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○A54.230.79.412026-03-31 → 2026-07-30 · 17 obs

○A54.230.79.592026-03-31 → 2026-07-30 · 17 obs

○A54.230.79.722026-03-31 → 2026-07-30 · 17 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, h.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net...	-
openknowl.com	ns-245.awsdns-30.com, ns-781.awsdns-33.net, ns-1851.awsdns-39.co.uk, ns-1378.awsdns-44.org	2 records

✅ Authoritative Response

Server:205.251.195.13

NS records: ns-245.awsdns-30.com, ns-781.awsdns-33.net, ns-1851.awsdns-39.co.uk, ns-1378.awsdns-44.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openknowl.com (unsigned zone)

⏱️ Timing

Total: 495ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.170.19.3, 3.170.19.114...`
NS	4	`ns-1378.awsdns-44.org, ns-1851.awsdns-39.co.uk...`
MX	6	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	5	`MS=ms87836337, _5a7z1sz4y5tkqob901epi65ynihf5hc...`
SOA	1	`ns-1851.awsdns-39.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-245.awsdns-30.com, ns-245.awsdns-30.com)

Analysis

Hierarchy

openknowl.com is the parent zone for mail.openknowl.com.

IP Addresses

openknowl.com has four IP addresses: 3.170.19.3, 3.170.19.47, 3.170.19.86 and 3.170.19.114.

Name Servers

The authoritative name servers for openknowl.com are ns-245.awsdns-30.com, ns-781.awsdns-33.net, ns-1378.awsdns-44.org and ns-1851.awsdns-39.co.uk.

openknowl.com partially shares its NS delegation with several other domains, including cyrilbaah.com, olalamayoristas.com.ar, friedland.io and two others.

ns-245.awsdns-30.com, ns-781.awsdns-33.net, ns-1378.awsdns-44.org and ns-1851.awsdns-39.co.uk each carry two IP addresses. ns-245.awsdns-30.com has 205.251.192.245 and 2600:9000:5300:f500::1; ns-781.awsdns-33.net has 205.251.195.13 and 2600:9000:5303:d00::1; ns-1378.awsdns-44.org has 205.251.197.98 and 2600:9000:5305:6200::1; ns-1851.awsdns-39.co.uk has 205.251.199.59 and 2600:9000:5307:3b00::1.

Mail Servers

The MX records for openknowl.com point to 6 mail servers — mail.openknowl.com, aspmx.l.google.com, alt1.aspmx.l.google.com and 3 other.

openknowl.com has at least partial mail server overlap with other domains such as ns500754.ns500754.ns500742.ns500671.ns500704.ns500731.ns500731.ns500678.ns500153.tenderladiesbz.com, ns500698.ns500759.ns500735.ns500736.ns500736.ns500736.ns500698.ns500698.ns500698.ns500698.ns500619.ns500652.ns500576.ns500576.trackreceptor.com, micatch.net and two more.

These mail servers commonly appear together with alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and two other mail servers.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com points to 142.251.16.27 and 2607:f8b0:4004:c1b::1a.

alt1.aspmx.l.google.com points to 192.178.234.27 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com points to 172.253.157.27 and 2a00:1450:400c:c23::1b.