codeandtheory.com - dns.ninja

`codeandtheory.com`

DNSSEC	⚠️ Not signed
A	216.150.1.1^{🇨🇦 Amazon216.150.1.0/24 EC2 Prefix}
NS	`ns-352.awsdns-44.com` ⭐
		A	2600:9000:5301:6000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-352.awsdns-44.com`
		A	205.251.193.96^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-352.awsdns-44.com`
NS	`ns-1317.awsdns-36.org`
		A	2600:9000:5305:2500::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1317.awsdns-36.org`
		A	205.251.197.37^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1317.awsdns-36.org`
NS	`ns-1573.awsdns-04.co.uk`
		A	2600:9000:5306:2500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1573.awsdns-04.co.uk`
		A	205.251.198.37^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1573.awsdns-04.co.uk`
NS	`ns-967.awsdns-56.net`
		A	2600:9000:5303:c700::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-967.awsdns-56.net`
		A	205.251.195.199^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-967.awsdns-56.net`
MX	`mxa-00852301.gslb.pphosted.com` ⭐
		A	67.231.148.157^{🇺🇸 Proofpoint67.231.148.0/24 Inc.}
			PTR	`mx0a-00852301.pphosted.com`
MX	`mxb-00852301.gslb.pphosted.com` ⭐
		A	67.231.148.157^{🇺🇸 Proofpoint67.231.148.0/24 Inc.}
			PTR	`mx0a-00852301.pphosted.com`
TXT	`0ed1fe018a07e3b26d361945b68a88a24ad65b3b6c`
TXT	`0ed1fe018ae73c09ca177843eb84bc24d6e578ed91`
TXT	`MS=ms79136136`
TXT	`MS=ms86915045`
TXT	`ZOOM_verify_fOkV0tLdNeepBsUPKAMOoL`
TXT	`adobe-idp-site-verification=517e4a98f7a4aa731b87b9d35a044946bc0782c5fdd2ce536...`
TXT	`anthropic-domain-verification-xcnt4m=sWpJHvZnk3m6YmmDoT9R3uAap`
TXT	`apple-domain-verification=6vqQZGuHWz7bzpei`
TXT	`atlassian-domain-verification=FRPuNP4Qml7UnpOVtmAAhkaWhV25/d77M/L6Ds1pWjARMT6...`
TXT	`cursor-domain-verification-6xeprj=0UbenWMWor4ItZAiJjSDYTAI9`
TXT	`google-site-verification=d3vTmEOCXpUQzjwDANYaHe7LL-6t60Z2cOJTnUyeq5M`
TXT	`google-site-verification=y_HS8cZCgVDOy3g7QjZBW4b2RiwtpzPmxcF87Jq2SkQ`
TXT	`knowbe4-site-verification=0209999c286c0ca60c160f1b0e0f90bc`
TXT	`miro-verification=43b0bbfd9d8bf6b7bd8856b625ff9f44c9dda6c4`
TXT	`tollbit-domain-verification=b52c5c038829b32f35ac2d7e7acb7bfe8eadb2adbbcddca70...`
TXT	`v=spf1 include:spf-00852301.pphosted.com include:spf.protection.outlook.com i...`
SOA	`ns-352.awsdns-44.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=1785624697

rank #293294 globally
rank #121510 in the tld
WOT: SAFE (72/100)

Subdomains

www.codeandtheory.com

helpdesk.codeandtheory.com

Same first word

codeandtheory.com

codeandtheory.tv

codeandtheory.nyc

codeandtheory.org

codeandtheory.net

DNS History

86 records (7 active, 79 former)

●NSns-1317.awsdns-36.org2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

●NSns-1573.awsdns-04.co.uk2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

●NSns-352.awsdns-44.com2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

●NSns-967.awsdns-56.net2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

○NSvandam.datagram.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○NSvarick.datagram.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○NSvenice.datagram.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○NSvesey.datagram.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○NSvestry.datagram.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○MXalt1.aspmx.l.google.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○MXalt2.aspmx.l.google.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○MXalt3.aspmx.l.google.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○MXalt4.aspmx.l.google.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

○MXaspmx.l.google.com2015-07-08 → 2017-12-06 · 4 obs

● 2015-07-08 09:44:02
● 2017-12-06 13:17:58
○ 2026-02-15 12:20:56
○ 2026-08-01 23:17:06

●MXmxa-00852301.gslb.pphosted.com2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

●MXmxb-00852301.gslb.pphosted.com2026-02-15 → 2026-08-01 · 3 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
● 2026-08-01 23:17:06

○A13.32.230.1072026-02-15 → 2026-07-10 · 29 obs

○ 2017-12-06 13:17:58
● 2026-02-15 12:20:56
○ 2026-02-16 01:59:36
○ 2026-02-16 10:02:52
● 2026-02-16 11:55:12
○ 2026-02-16 14:38:38
○ 2026-02-22 19:03:36
● 2026-02-23 04:18:38
○ 2026-02-23 19:15:22
○ 2026-03-03 10:54:04
● 2026-03-05 08:34:32
○ 2026-03-05 10:57:08
○ 2026-03-07 15:43:24
● 2026-03-08 07:45:52
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○ 2026-03-11 07:46:40
● 2026-03-11 11:25:44
● 2026-03-11 23:57:28
○ 2026-03-12 01:36:16
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● 2026-03-14 13:24:48
○ 2026-03-14 16:08:44
● 2026-07-03 09:34:26
○ 2026-07-04 04:48:26
● 2026-07-04 11:22:08
○ 2026-07-04 14:27:30
● 2026-07-10 23:07:02
○ 2026-07-11 02:59:26
○ 2026-08-01 23:17:06

○A13.32.230.1172026-02-15 → 2026-07-10 · 29 obs

○A13.32.230.352026-02-15 → 2026-07-10 · 29 obs

○A13.32.230.892026-02-15 → 2026-07-10 · 29 obs

○A13.35.107.1112026-06-28 → 2026-07-14 · 14 obs

○ 2026-06-28 15:26:18
● 2026-06-28 22:21:18
○ 2026-06-29 01:01:14
● 2026-07-12 18:34:46
○ 2026-07-12 21:27:26
● 2026-07-13 01:57:38
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● 2026-07-13 19:04:06
○ 2026-07-13 19:39:56
● 2026-07-14 11:22:12
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● 2026-07-14 13:44:08
○ 2026-07-14 14:39:06
○ 2026-08-01 23:17:06

○A13.35.107.482026-06-28 → 2026-07-14 · 14 obs

○A13.35.107.782026-06-28 → 2026-07-14 · 14 obs

○A13.35.107.802026-06-28 → 2026-07-14 · 14 obs

○A18.154.227.262026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-18 09:53:00
● 2026-02-22 15:02:54
○ 2026-02-22 19:03:36
○ 2026-08-01 23:17:06

○A18.154.227.362026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-18 09:53:00
● 2026-02-22 15:02:54
○ 2026-02-22 19:03:36
○ 2026-08-01 23:17:06

○A18.154.227.712026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-18 09:53:00
● 2026-02-22 15:02:54
○ 2026-02-22 19:03:36
○ 2026-08-01 23:17:06

○A18.154.227.92026-02-22 → 2026-02-22 · 4 obs

○ 2026-02-18 09:53:00
● 2026-02-22 15:02:54
○ 2026-02-22 19:03:36
○ 2026-08-01 23:17:06

○A18.155.68.292026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-27 14:25:22
● 2026-05-27 22:44:44
○ 2026-05-28 04:33:38
○ 2026-08-01 23:17:06

○A18.155.68.432026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-27 14:25:22
● 2026-05-27 22:44:44
○ 2026-05-28 04:33:38
○ 2026-08-01 23:17:06

○A18.155.68.492026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-27 14:25:22
● 2026-05-27 22:44:44
○ 2026-05-28 04:33:38
○ 2026-08-01 23:17:06

○A18.155.68.852026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-27 14:25:22
● 2026-05-27 22:44:44
○ 2026-05-28 04:33:38
○ 2026-08-01 23:17:06

○A18.160.46.1192026-02-18 → 2026-07-11 · 41 obs

○ 2026-02-16 14:38:38
● 2026-02-18 09:53:00
○ 2026-02-22 15:02:54
○ 2026-02-25 20:50:30
● 2026-02-26 11:33:32
○ 2026-02-26 19:13:56
○ 2026-05-23 15:23:38
● 2026-05-23 23:20:16
○ 2026-05-24 05:26:10
○ 2026-06-11 20:36:26
● 2026-06-12 15:05:32
○ 2026-06-12 15:58:08
○ 2026-06-13 13:53:10
● 2026-06-14 04:26:40
○ 2026-06-14 08:37:02
○ 2026-06-15 13:35:56
● 2026-06-15 14:27:50
○ 2026-06-15 17:40:24
● 2026-06-15 18:35:12
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● 2026-06-21 19:18:22
○ 2026-06-21 20:20:44
● 2026-06-22 03:50:22
○ 2026-06-22 04:34:40
● 2026-06-24 17:33:04
○ 2026-06-25 05:28:56
● 2026-06-25 19:19:50
○ 2026-06-25 21:16:24
● 2026-06-26 07:19:06
○ 2026-06-26 10:36:28
● 2026-06-29 01:01:14
○ 2026-06-29 10:31:12
● 2026-07-01 16:39:06
○ 2026-07-01 21:04:54
● 2026-07-09 21:57:28
○ 2026-07-09 22:39:58
● 2026-07-10 12:31:22
○ 2026-07-10 15:48:36
● 2026-07-11 09:29:18
○ 2026-07-11 10:50:50
○ 2026-08-01 23:17:06

○A18.160.46.362026-02-18 → 2026-07-11 · 41 obs

○A18.160.46.862026-02-18 → 2026-07-11 · 41 obs

○A18.160.46.982026-02-18 → 2026-07-11 · 41 obs

○A18.161.34.1012026-04-21 → 2026-05-26 · 22 obs

○ 2026-04-18 21:45:44
● 2026-04-21 11:32:42
○ 2026-04-22 10:53:16
○ 2026-04-24 01:30:56
● 2026-04-24 07:15:40
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○ 2026-04-27 05:55:48
● 2026-04-27 15:32:28
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○ 2026-05-02 02:25:04
● 2026-05-02 22:51:46
○ 2026-05-03 01:35:30
○ 2026-05-04 10:20:16
● 2026-05-04 11:22:26
○ 2026-05-05 10:37:32
○ 2026-05-16 19:07:40
● 2026-05-17 01:24:16
○ 2026-05-17 11:41:18
○ 2026-05-26 05:29:24
● 2026-05-26 11:49:32
○ 2026-05-26 16:11:02
○ 2026-08-01 23:17:06

○A18.161.34.1192026-04-21 → 2026-05-26 · 22 obs

○A18.161.34.442026-04-21 → 2026-05-26 · 22 obs

○A18.161.34.572026-04-21 → 2026-05-26 · 22 obs

○A18.165.122.1212026-07-12 → 2026-07-14 · 10 obs

○ 2026-07-12 18:34:46
● 2026-07-12 21:27:26
○ 2026-07-13 00:55:58
● 2026-07-13 16:54:38
○ 2026-07-13 19:04:06
● 2026-07-14 09:50:40
○ 2026-07-14 11:22:12
● 2026-07-14 13:02:34
○ 2026-07-14 13:44:08
○ 2026-08-01 23:17:06

○A18.165.122.552026-07-12 → 2026-07-14 · 10 obs

○A18.165.122.612026-07-12 → 2026-07-14 · 10 obs

○A18.165.122.652026-07-12 → 2026-07-14 · 10 obs

○A18.238.4.1202026-05-08 → 2026-05-08 · 5 obs

○ 2026-05-08 07:33:26
● 2026-05-08 11:27:10
● 2026-05-08 17:36:38
○ 2026-05-09 06:46:42
○ 2026-08-01 23:17:06

○A18.238.4.212026-05-08 → 2026-05-08 · 5 obs

○ 2026-05-08 07:33:26
● 2026-05-08 11:27:10
● 2026-05-08 17:36:38
○ 2026-05-09 06:46:42
○ 2026-08-01 23:17:06

○A18.238.4.252026-05-08 → 2026-05-08 · 5 obs

○ 2026-05-08 07:33:26
● 2026-05-08 11:27:10
● 2026-05-08 17:36:38
○ 2026-05-09 06:46:42
○ 2026-08-01 23:17:06

○A18.238.4.632026-05-08 → 2026-05-08 · 5 obs

○ 2026-05-08 07:33:26
● 2026-05-08 11:27:10
● 2026-05-08 17:36:38
○ 2026-05-09 06:46:42
○ 2026-08-01 23:17:06

○A18.64.183.1002026-05-19 → 2026-07-01 · 25 obs

○ 2026-05-19 04:35:22
● 2026-05-19 18:35:16
● 2026-05-19 22:10:54
○ 2026-05-20 00:49:32
● 2026-05-20 04:37:06
● 2026-05-23 15:23:38
○ 2026-05-24 12:43:34
● 2026-05-25 04:01:30
○ 2026-05-26 03:46:18
● 2026-05-26 16:11:02
● 2026-05-29 02:09:28
○ 2026-05-29 13:37:00
● 2026-05-30 07:29:34
○ 2026-05-31 12:41:24
○ 2026-06-03 17:57:52
● 2026-06-04 17:04:16
● 2026-06-06 16:07:10
○ 2026-06-07 02:20:04
● 2026-06-07 22:07:12
○ 2026-06-07 22:57:52
● 2026-06-08 01:41:50
○ 2026-06-08 02:29:16
● 2026-07-01 21:04:54
○ 2026-07-01 22:29:08
○ 2026-08-01 23:17:06

○A18.64.183.142026-05-19 → 2026-07-01 · 25 obs

○A18.64.183.202026-05-19 → 2026-07-01 · 25 obs

○A18.64.183.362026-05-19 → 2026-07-01 · 25 obs

○A216.137.44.1042026-02-16 → 2026-06-30 · 41 obs

○ 2026-02-15 12:20:56
● 2026-02-16 01:59:36
● 2026-02-16 10:02:52
○ 2026-02-16 11:55:12
● 2026-02-16 14:38:38
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○ 2026-04-27 15:32:28
● 2026-05-03 01:35:30
○ 2026-05-04 01:39:54
● 2026-05-09 06:46:42
● 2026-05-19 04:35:22
○ 2026-05-19 18:35:16
○ 2026-06-11 03:03:54
● 2026-06-13 02:53:00
● 2026-06-17 03:20:16
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● 2026-06-29 10:31:12
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● 2026-06-30 15:27:30
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○A216.137.44.1102026-02-16 → 2026-06-30 · 41 obs

○A216.137.44.1202026-02-16 → 2026-06-30 · 41 obs

○A216.137.44.182026-02-16 → 2026-06-30 · 41 obs

●A216.150.1.12026-07-15 → 2026-08-01 · 3 obs

○ 2026-07-14 14:39:06
● 2026-07-15 08:41:54
● 2026-08-01 23:17:06

○A3.164.182.1002026-06-06 → 2026-06-06 · 4 obs

○ 2026-06-04 17:04:16
● 2026-06-06 08:49:46
○ 2026-06-06 16:07:10
○ 2026-08-01 23:17:06

○A3.164.182.1112026-06-06 → 2026-06-06 · 4 obs

○ 2026-06-04 17:04:16
● 2026-06-06 08:49:46
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○ 2026-08-01 23:17:06

○A3.164.182.152026-06-06 → 2026-06-06 · 4 obs

○ 2026-06-04 17:04:16
● 2026-06-06 08:49:46
○ 2026-06-06 16:07:10
○ 2026-08-01 23:17:06

○A3.164.182.792026-06-06 → 2026-06-06 · 4 obs

○ 2026-06-04 17:04:16
● 2026-06-06 08:49:46
○ 2026-06-06 16:07:10
○ 2026-08-01 23:17:06

○A3.166.181.122026-03-31 → 2026-07-14 · 47 obs

○ 2026-03-27 01:36:38
● 2026-03-31 11:14:44
● 2026-03-31 17:02:10
○ 2026-04-01 15:52:50
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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
codeandtheory.com	ns-352.awsdns-44.com, ns-967.awsdns-56.net, ns-1573.awsdns-04.co.uk, ns-1317.awsdns-36.org	2 records

✅ Authoritative Response

Server:205.251.197.37

NS records: ns-352.awsdns-44.com, ns-967.awsdns-56.net, ns-1573.awsdns-04.co.uk, ns-1317.awsdns-36.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codeandtheory.com (unsigned zone)

⏱️ Timing

Total: 309ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.150.1.1`
NS	4	`ns-1317.awsdns-36.org, ns-1573.awsdns-04.co.uk...`
MX	2	`mxa-00852301.gslb.pphosted.com (pri: 10), mxb-00852301.gslb.pphosted.com (pri: 10)`
TXT	16	`0ed1fe018a07e3b26d361945b68a88a24ad65b3b, 0ed1fe018ae73c09ca177843eb84bc24d6e578ed...`
SOA	1	`ns-352.awsdns-44.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-352.awsdns-44.com, ns-352.awsdns-44.com)

Analysis

Hierarchy

codeandtheory.com serves as the parent of www.codeandtheory.com and helpdesk.codeandtheory.com.

IP Addresses

codeandtheory.com has exactly one IP address — 216.150.1.1.

sciam.fr, powerconsultingllc.com, cmux.com plus two other host names have IP numbers in common with codeandtheory.com.

Name Servers

Four name servers handle the delegation for codeandtheory.com: ns-352.awsdns-44.com, ns-967.awsdns-56.net, ns-1317.awsdns-36.org and ns-1573.awsdns-04.co.uk.

codeandtheory.com shares at least some of its name servers with other domains, including carnivalcloud.com, bishalwagle.com, csaida.eu and two others.

These name servers are frequently paired with the name servers ns-1670.awsdns-16.co.uk, ns-27.awsdns-03.com and ns-1321.awsdns-37.org.

The host names ns-352.awsdns-44.com, ns-967.awsdns-56.net, ns-1317.awsdns-36.org and ns-1573.awsdns-04.co.uk each resolve to two IP addresses: ns-352.awsdns-44.com resolves to 205.251.193.96 and 2600:9000:5301:6000::1; ns-967.awsdns-56.net resolves to 205.251.195.199 and 2600:9000:5303:c700::1; ns-1317.awsdns-36.org resolves to 205.251.197.37 and 2600:9000:5305:2500::1; ns-1573.awsdns-04.co.uk resolves to 205.251.198.37 and 2600:9000:5306:2500::1.

Mail Servers

codeandtheory.com uses two mail servers, mxa-00852301.gslb.pphosted.com and mxb-00852301.gslb.pphosted.com.

The mail server setup of codeandtheory.com matches that of other domains such as businesstraveller.com, sloanepr.com, cpbgroup.com and two others.

codeandtheory.com shares at least some of its mail servers with other domains, such as nationalresearchgrp.com.

mxa-00852301.gslb.pphosted.com and mxb-00852301.gslb.pphosted.com both resolve to the same single IP address: 67.231.148.157.

mxa-00852301.gslb.pphosted.com and mxb-00852301.gslb.pphosted.com are host names that each point to 67.231.148.157 IP addresses.