nptrainingworks.com - dns.ninja

`nptrainingworks.com`

DNSSEC	🔒 Signed (DS record present)
A	13.226.209.7^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
		PTR	`server-13-226-209-7.iad61.r.cloudfront.net`
A	13.226.209.69^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
A	13.226.209.110^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
A	13.226.209.126^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
NS	`ns-46.awsdns-05.com` ⭐
		A	2600:9000:5300:2e00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-46.awsdns-05.com`
		A	205.251.192.46^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-46.awsdns-05.com`
NS	`ns-1399.awsdns-46.org`
		A	2600:9000:5305:7700::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1399.awsdns-46.org`
		A	205.251.197.119^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1399.awsdns-46.org`
NS	`ns-1991.awsdns-56.co.uk`
		A	2600:9000:5307:c700::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1991.awsdns-56.co.uk`
		A	205.251.199.199^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1991.awsdns-56.co.uk`
NS	`ns-676.awsdns-20.net`
		A	2600:9000:5302:a400::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-676.awsdns-20.net`
		A	205.251.194.164^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-676.awsdns-20.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽¹⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽²⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`v=spf1 a mx include:_spf.google.com ip4:54.85.254.209 include:sendgrid.net ip...`
SOA	`ns-46.awsdns-05.com`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=1785902464

Same first word

nptrainingworks.org

nptrainingworks.com

DNS History

101 records (13 active, 88 former)

●NSns-1399.awsdns-46.org2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●NSns-1991.awsdns-56.co.uk2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●NSns-46.awsdns-05.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●NSns-676.awsdns-20.net2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●MXalt1.aspmx.l.google.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●MXalt2.aspmx.l.google.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●MXaspmx.l.google.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●MXaspmx2.googlemail.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

●MXaspmx3.googlemail.com2015-05-31 → 2026-08-05 · 2 obs

● 2015-05-31 05:29:58
● 2026-08-05 04:02:18

○A107.21.51.1412015-05-31 → 2016-02-08 · 6 obs

● 2015-05-31 05:29:58
○ 2015-10-23 23:43:58
○ 2016-01-17 04:22:34
● 2016-02-08 08:36:48
○ 2016-04-21 23:25:04
○ 2026-08-05 04:02:18

○A108.138.103.1292026-06-10 → 2026-08-04 · 32 obs

○ 2026-06-08 17:18:54
● 2026-06-10 23:17:58
● 2026-06-11 02:14:52
○ 2026-06-11 07:09:34
○ 2026-06-16 11:24:40
● 2026-07-01 09:59:54
● 2026-07-03 15:34:54
○ 2026-07-07 17:21:38
● 2026-07-09 02:57:42
● 2026-07-18 02:24:04
○ 2026-07-19 00:01:36
○ 2026-07-24 17:51:58
● 2026-07-28 02:43:14
● 2026-08-02 11:01:50
○ 2026-08-02 22:56:10
● 2026-08-02 23:26:22
○ 2026-08-03 00:36:40
● 2026-08-03 03:05:44
○ 2026-08-03 06:27:56
● 2026-08-03 11:17:06
○ 2026-08-03 13:15:12
● 2026-08-03 17:05:30
○ 2026-08-03 23:21:40
● 2026-08-04 00:07:54
○ 2026-08-04 07:25:42
● 2026-08-04 10:24:16
○ 2026-08-04 14:53:42
● 2026-08-04 16:40:12
○ 2026-08-04 18:38:06
● 2026-08-04 20:40:40
○ 2026-08-05 04:02:14
○ 2026-08-05 04:02:18

○A108.138.103.252026-06-10 → 2026-08-04 · 32 obs

○A108.138.103.582026-06-10 → 2026-08-04 · 32 obs

○A108.138.103.942026-06-10 → 2026-08-04 · 32 obs

○A108.139.119.292026-04-12 → 2026-04-19 · 11 obs

○ 2026-04-07 12:50:30
● 2026-04-12 06:53:56
● 2026-04-12 15:48:26
○ 2026-04-12 17:13:36
○ 2026-04-16 22:28:58
● 2026-04-17 03:32:54
○ 2026-04-17 07:28:38
○ 2026-04-19 13:37:58
● 2026-04-19 19:47:12
○ 2026-04-19 22:19:28
○ 2026-08-05 04:02:18

○A108.139.119.392026-04-12 → 2026-04-19 · 11 obs

○A108.139.119.432026-04-12 → 2026-04-19 · 11 obs

○A108.139.119.612026-04-12 → 2026-04-19 · 11 obs

○A108.156.46.242026-02-15 → 2026-02-16 · 9 obs

○ 2020-07-22 00:25:38
● 2026-02-15 23:26:26
○ 2026-02-16 00:09:52
● 2026-02-16 03:10:42
○ 2026-02-16 08:47:48
● 2026-02-16 09:50:48
● 2026-02-16 16:28:56
○ 2026-02-16 21:47:02
○ 2026-08-05 04:02:18

○A108.156.46.592026-02-15 → 2026-02-16 · 9 obs

○A108.156.46.62026-02-15 → 2026-02-16 · 9 obs

○A108.156.46.872026-02-15 → 2026-02-16 · 9 obs

○A13.224.125.192026-06-17 → 2026-07-28 · 8 obs

○ 2026-06-16 17:45:04
● 2026-06-17 07:01:26
○ 2026-06-17 11:58:06
● 2026-07-27 12:30:44
○ 2026-07-27 18:29:58
● 2026-07-28 17:05:58
○ 2026-07-28 20:27:42
○ 2026-08-05 04:02:18

○A13.224.125.32026-06-17 → 2026-07-28 · 8 obs

○ 2026-06-16 17:45:04
● 2026-06-17 07:01:26
○ 2026-06-17 11:58:06
● 2026-07-27 12:30:44
○ 2026-07-27 18:29:58
● 2026-07-28 17:05:58
○ 2026-07-28 20:27:42
○ 2026-08-05 04:02:18

○A13.224.125.302026-06-17 → 2026-07-28 · 8 obs

○ 2026-06-16 17:45:04
● 2026-06-17 07:01:26
○ 2026-06-17 11:58:06
● 2026-07-27 12:30:44
○ 2026-07-27 18:29:58
● 2026-07-28 17:05:58
○ 2026-07-28 20:27:42
○ 2026-08-05 04:02:18

○A13.224.125.552026-06-17 → 2026-07-28 · 8 obs

○ 2026-06-16 17:45:04
● 2026-06-17 07:01:26
○ 2026-06-17 11:58:06
● 2026-07-27 12:30:44
○ 2026-07-27 18:29:58
● 2026-07-28 17:05:58
○ 2026-07-28 20:27:42
○ 2026-08-05 04:02:18

●A13.226.209.1102026-02-16 → 2026-08-05 · 28 obs

○ 2026-02-15 23:26:26
● 2026-02-16 00:09:52
○ 2026-02-16 03:10:42
○ 2026-02-16 16:28:56
● 2026-02-16 21:47:02
○ 2026-02-17 07:52:04
○ 2026-06-16 17:45:04
● 2026-06-19 20:20:44
○ 2026-06-20 05:44:40
● 2026-06-24 10:14:32
● 2026-07-02 12:40:38
○ 2026-07-03 09:39:08
● 2026-07-08 17:26:18
○ 2026-07-11 20:26:58
● 2026-07-12 09:21:26
○ 2026-07-12 10:35:56
● 2026-08-03 00:36:40
○ 2026-08-03 03:05:44
● 2026-08-03 06:27:56
○ 2026-08-03 11:17:06
● 2026-08-03 23:21:40
○ 2026-08-04 00:07:54
● 2026-08-04 07:25:42
○ 2026-08-04 10:24:16
● 2026-08-04 18:38:06
○ 2026-08-04 20:40:40
● 2026-08-05 04:02:14
● 2026-08-05 04:02:18

●A13.226.209.1262026-02-16 → 2026-08-05 · 28 obs

●A13.226.209.692026-02-16 → 2026-08-05 · 28 obs

●A13.226.209.72026-02-16 → 2026-08-05 · 28 obs

○A13.227.231.142026-07-26 → 2026-07-28 · 6 obs

○ 2026-07-26 04:40:32
● 2026-07-26 08:56:34
○ 2026-07-26 10:43:00
● 2026-07-28 10:00:22
○ 2026-07-28 12:30:26
○ 2026-08-05 04:02:18

○A13.227.231.162026-07-26 → 2026-07-28 · 6 obs

○ 2026-07-26 04:40:32
● 2026-07-26 08:56:34
○ 2026-07-26 10:43:00
● 2026-07-28 10:00:22
○ 2026-07-28 12:30:26
○ 2026-08-05 04:02:18

○A13.227.231.582026-07-26 → 2026-07-28 · 6 obs

○ 2026-07-26 04:40:32
● 2026-07-26 08:56:34
○ 2026-07-26 10:43:00
● 2026-07-28 10:00:22
○ 2026-07-28 12:30:26
○ 2026-08-05 04:02:18

○A13.227.231.772026-07-26 → 2026-07-28 · 6 obs

○ 2026-07-26 04:40:32
● 2026-07-26 08:56:34
○ 2026-07-26 10:43:00
● 2026-07-28 10:00:22
○ 2026-07-28 12:30:26
○ 2026-08-05 04:02:18

○A13.32.179.312026-04-07 → 2026-07-30 · 18 obs

○ 2026-03-31 15:17:12
● 2026-04-07 08:22:26
○ 2026-04-07 12:50:30
● 2026-06-19 10:43:46
○ 2026-06-19 14:42:32
○ 2026-06-21 01:32:32
● 2026-06-22 22:24:40
● 2026-06-25 22:05:04
○ 2026-06-27 08:43:32
● 2026-06-28 22:55:28
○ 2026-06-30 16:41:08
● 2026-07-28 06:19:46
○ 2026-07-29 16:24:06
● 2026-07-30 08:23:30
○ 2026-07-30 11:04:30
● 2026-07-30 14:34:54
○ 2026-07-30 18:27:26
○ 2026-08-05 04:02:18

○A13.32.179.392026-04-07 → 2026-07-30 · 18 obs

○A13.32.179.452026-04-07 → 2026-07-30 · 18 obs

○A13.32.179.82026-04-07 → 2026-07-30 · 18 obs

○A13.32.230.502026-02-16 → 2026-08-04 · 22 obs

○ 2026-02-16 03:10:42
● 2026-02-16 08:47:48
○ 2026-02-16 09:50:48
○ 2026-02-17 07:52:04
● 2026-02-17 08:40:06
○ 2026-02-18 00:10:54
○ 2026-03-22 02:11:16
● 2026-07-03 09:39:08
● 2026-07-07 17:21:38
○ 2026-07-11 05:47:56
● 2026-07-18 00:31:20
○ 2026-07-23 19:09:30
● 2026-07-29 16:24:06
● 2026-08-02 01:10:20
○ 2026-08-02 11:01:50
● 2026-08-02 22:56:10
○ 2026-08-02 23:26:22
● 2026-08-03 13:15:12
○ 2026-08-03 17:05:30
● 2026-08-04 14:53:42
○ 2026-08-04 16:40:12
○ 2026-08-05 04:02:18

○A13.32.230.642026-02-16 → 2026-08-04 · 22 obs

○A13.32.230.692026-02-16 → 2026-08-04 · 22 obs

○A13.32.230.762026-02-16 → 2026-08-04 · 22 obs

○A13.32.241.1122026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 02:11:16
● 2026-03-22 15:43:10
○ 2026-03-22 22:35:22
○ 2026-08-05 04:02:18

○A13.32.241.1202026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 02:11:16
● 2026-03-22 15:43:10
○ 2026-03-22 22:35:22
○ 2026-08-05 04:02:18

○A13.32.241.1272026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 02:11:16
● 2026-03-22 15:43:10
○ 2026-03-22 22:35:22
○ 2026-08-05 04:02:18

○A13.32.241.42026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 02:11:16
● 2026-03-22 15:43:10
○ 2026-03-22 22:35:22
○ 2026-08-05 04:02:18

○A13.33.235.102026-03-23 → 2026-07-19 · 18 obs

○ 2026-03-22 22:35:22
● 2026-03-23 03:17:42
○ 2026-03-23 04:28:20
○ 2026-03-24 14:01:14
● 2026-03-24 16:54:34
○ 2026-03-25 14:06:58
○ 2026-03-27 22:49:22
● 2026-07-11 08:51:52
○ 2026-07-12 09:21:26
● 2026-07-13 11:56:18
○ 2026-07-13 22:15:22
● 2026-07-14 15:55:30
○ 2026-07-15 01:26:38
● 2026-07-16 18:03:22
○ 2026-07-16 19:03:08
● 2026-07-19 01:03:36
○ 2026-07-19 02:13:24
○ 2026-08-05 04:02:18

○A13.33.235.1042026-03-23 → 2026-07-19 · 18 obs

○A13.33.235.512026-03-23 → 2026-07-19 · 18 obs

○A13.33.235.942026-03-23 → 2026-07-19 · 18 obs

○A13.35.107.202026-07-13 → 2026-08-01 · 18 obs

○ 2026-07-13 11:56:18
● 2026-07-13 13:20:28
○ 2026-07-13 16:37:32
● 2026-07-13 18:01:54
○ 2026-07-13 19:33:24
○ 2026-07-18 02:24:04
● 2026-07-19 00:01:36
● 2026-07-20 21:16:48
○ 2026-07-21 16:08:02
● 2026-07-26 04:40:32
● 2026-07-27 06:24:32
○ 2026-07-28 17:05:58
● 2026-07-30 01:23:14
● 2026-07-31 06:52:14
○ 2026-07-31 12:36:20
● 2026-08-01 06:34:22
○ 2026-08-01 07:42:54
○ 2026-08-05 04:02:18

○A13.35.107.552026-07-13 → 2026-08-01 · 18 obs

○A13.35.107.702026-07-13 → 2026-08-01 · 18 obs

○A13.35.107.922026-07-13 → 2026-08-01 · 18 obs

○A18.154.110.1052026-05-20 → 2026-07-01 · 17 obs

○ 2026-05-20 05:30:32
● 2026-05-20 06:50:00
● 2026-05-20 10:25:20
○ 2026-05-20 11:15:48
○ 2026-05-20 11:46:42
● 2026-05-20 22:20:00
● 2026-05-23 00:31:52
○ 2026-05-24 14:31:02
● 2026-05-25 07:33:58
● 2026-06-06 05:30:40
○ 2026-06-07 10:24:50
○ 2026-06-08 07:59:42
● 2026-07-01 08:50:38
○ 2026-07-01 09:59:54
● 2026-07-01 21:05:14
○ 2026-07-02 05:28:38
○ 2026-08-05 04:02:18

○A18.154.110.332026-05-20 → 2026-07-01 · 17 obs

○A18.154.110.422026-05-20 → 2026-07-01 · 17 obs

○A18.154.110.472026-05-20 → 2026-07-01 · 17 obs

○A18.155.129.292026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-25 17:58:06
● 2026-02-28 23:13:24
○ 2026-03-02 19:01:18
○ 2026-08-05 04:02:18

○A18.155.129.472026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-25 17:58:06
● 2026-02-28 23:13:24
○ 2026-03-02 19:01:18
○ 2026-08-05 04:02:18

○A18.155.129.632026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-25 17:58:06
● 2026-02-28 23:13:24
○ 2026-03-02 19:01:18
○ 2026-08-05 04:02:18

○A18.155.129.942026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-25 17:58:06
● 2026-02-28 23:13:24
○ 2026-03-02 19:01:18
○ 2026-08-05 04:02:18

○A18.238.217.1162026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-18 00:10:54
● 2026-02-25 05:16:20
○ 2026-02-25 17:58:06
○ 2026-08-05 04:02:18

○A18.238.217.322026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-18 00:10:54
● 2026-02-25 05:16:20
○ 2026-02-25 17:58:06
○ 2026-08-05 04:02:18

○A18.238.217.682026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-18 00:10:54
● 2026-02-25 05:16:20
○ 2026-02-25 17:58:06
○ 2026-08-05 04:02:18

○A18.238.217.782026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-18 00:10:54
● 2026-02-25 05:16:20
○ 2026-02-25 17:58:06
○ 2026-08-05 04:02:18

○A18.239.168.1162026-03-09 → 2026-05-20 · 16 obs

○ 2026-03-08 06:13:10
● 2026-03-09 00:12:48
○ 2026-03-09 02:50:36
○ 2026-04-20 15:47:10
● 2026-04-20 20:05:36
○ 2026-04-21 10:22:34
○ 2026-05-05 22:30:14
● 2026-05-06 15:39:28
○ 2026-05-06 23:43:50
○ 2026-05-18 19:04:50
● 2026-05-19 10:01:50
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○A3.163.63.1172026-03-28 → 2026-06-08 · 16 obs

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○A52.216.78.1152020-07-22 → 2020-07-22 · 4 obs

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○A54.85.165.542015-05-31 → 2016-01-17 · 4 obs

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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
nptrainingworks.com	ns-46.awsdns-05.com, ns-676.awsdns-20.net, ns-1991.awsdns-56.co.uk, ns-1399.awsdns-46.org	2 records

✅ Authoritative Response

Server:205.251.197.119

NS records: ns-46.awsdns-05.com, ns-676.awsdns-20.net, ns-1991.awsdns-56.co.uk, ns-1399.awsdns-46.org

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1540ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.226.209.110, 13.226.209.7...`
NS	4	`ns-1399.awsdns-46.org, ns-1991.awsdns-56.co.uk...`
MX	5	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 15)...`
TXT	1	`v=spf1 a mx include:_spf.google.com ip4:`
SOA	1	`ns-46.awsdns-05.com awsdns-hostmaster.am`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-46.awsdns-05.com, ns-46.awsdns-05.com)

Analysis

IP Addresses

nptrainingworks.com resolves to four IP addresses: 13.226.209.7, 13.226.209.69, 13.226.209.110 and 13.226.209.126.

accomo.co.kr, d38gy38zfpamtm.cloudfront.net, d3ej71ou9p12s2.cloudfront.net and two other host names share IP numbers with nptrainingworks.com.

Name Servers

The authoritative name servers for nptrainingworks.com are ns-46.awsdns-05.com, ns-676.awsdns-20.net, ns-1399.awsdns-46.org and ns-1991.awsdns-56.co.uk.

nptrainingworks.com shares at least some of its name servers with other domains, including fineartsdirect.com, d345vc7icpv0br.cloudfront.net, www.plantur39.com and two others.

The host names ns-46.awsdns-05.com, ns-676.awsdns-20.net, ns-1399.awsdns-46.org and ns-1991.awsdns-56.co.uk each resolve to two IP addresses: ns-46.awsdns-05.com resolves to 205.251.192.46 and 2600:9000:5300:2e00::1; ns-676.awsdns-20.net resolves to 205.251.194.164 and 2600:9000:5302:a400::1; ns-1399.awsdns-46.org resolves to 205.251.197.119 and 2600:9000:5305:7700::1; ns-1991.awsdns-56.co.uk resolves to 205.251.199.199 and 2600:9000:5307:c700::1.

Mail Servers

nptrainingworks.com is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

nptrainingworks.com has at least partial mail server overlap with other domains such as ns500759.ns500758.ns500698.ns500698.ns500698.ns500736.ns500735.ns500735.ns500736.ns500698.ns500708.ns500698.ns500698.ns500619.ns500686.ns500619.ns500619.trackreceptor.com, ns500758.ns500698.ns500759.ns500758.ns500736.ns500735.ns500736.ns500735.ns500708.ns500698.ns500708.ns500652.trackreceptor.com, ithrive.net and two more.

These mail servers commonly co-occur with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 others.

Hostnames that resolve to two IP addresses:

aspmx2.googlemail.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx.l.google.com maps to two IP addresses — 142.251.167.27 and 2607:f8b0:4004:c23::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1b.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 108.177.123.26 IP addresses.

These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 172.253.116.26 IP addresses.