`ibu.instructure.com`

DNSSEC	⚠️ Not signed
A	18.161.205.2^{🇺🇸 Amazon18.161.204.0/23}
		PTR	`server-18-161-205-2.gig51.r.cloudfront.net`
A	18.161.205.37^{🇺🇸 Amazon18.161.204.0/23}
A	18.161.205.54^{🇺🇸 Amazon18.161.204.0/23}
A	18.161.205.122^{🇺🇸 Amazon18.161.204.0/23}

`instructure.com`

	DNSSEC	⚠️ Not signed
	A	151.101.2.132^{🇺🇸 Fastly151.101.0.0/22}
	A	151.101.66.132^{🇺🇸 Fastly151.101.64.0/22}
	NS	`ns-2.awsdns-00.com` ⭐
	NS	`ns-1354.awsdns-41.org`
	NS	`ns-1799.awsdns-32.co.uk`
	NS	`ns-996.awsdns-60.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt2.aspmx.l.google.com`⁽¹⁰⁾
	MX	`aspmx2.googlemail.com`⁽²⁰⁾
	MX	`aspmx3.googlemail.com`⁽²⁰⁾
	TXT	`2acd5847c66f4325be05af390213b8c7.instructure.com`
	TXT	`MS=ms20700021`
	TXT	`ZOOM_verify_Up1Opd4-S9ChtRORps16qw`
	TXT	`adobe-idp-site-verification=4287460e7429c97ad75b995bdef6b0d7ff1c9b541946abfaf...`
	TXT	`anthropic-domain-verification-2pz98m=hO4bmZQTC5gutJZcanKeagAWR`
	TXT	`anthropic-domain-verification-4mh4xs=A4vkPXqJIA4VVi9GAbxDEPohr`
	TXT	`anthropic-domain-verification-pz1pr3=sZkvFuBJeSdmEXoj4KJYYQW8Z`
	TXT	`anthropic-domain-verification-vz61c8=kfBobb4vvH2M9xtsZhFajtKHr`
	TXT	`apple-domain-verification=8oZZjgKWADRgkWui`
	TXT	`astro-domain-verification=cmbjhzn9b0c0h01pimts1v2h1`
	TXT	`atlassian-domain-verification=pS8CbCDhL3R1mMujl07LwhltWFcJtks8mrBa7l/1uocODR9...`
	TXT	`bugcrowd-verification=817deedf9414a9ea878ff255c42a9afa`
	TXT	`canva-site-verification=jRPvv0c9AZGTaJIIPIpfAQ`
	TXT	`canva-site-verification=jiASD5n0aNnvUnfIP1w4XA`
	TXT	`docker-verification=7555bc65-ce7a-4ed2-8028-4bf0274d2c5b`
	TXT	`docusign=1ca86ab9-2ddb-4d63-b719-4798811390ca`
	TXT	`drift-domain-verification=608941e9992460f0ccd58daa1decf1808863da188a929106582...`
	TXT	`fastly-domain-delegation-jpv3oeoqr3aouxwkbhpb-00480650-2025-07-31`
	TXT	`figma-domain-verification=848b9254b032bfe488e955a140a8a63cb345186c3c69b7200f7...`
	TXT	`google-site-verification=3SDlSr_fW_6bYm0BDDK4ZXs6I5yKtB4WyXL3GNozx8I`
	TXT	`google-site-verification=WSlNW84_Zm6mbOaM35pQyLJUt7-OtVXNjzXe9LT-eJI`
	TXT	`google-site-verification=bC89ByaBs616PDmJLrSUG5RS3fyA8agwCtXch9G0GL0`
	TXT	`hcp-domain-verification=24de36f1e2e1ad573ac320a62707e7ec8ac0cce2dccf7985914a8...`
	TXT	`jamf-site-verification=-bAufptjYdQAfzF-s7PBtQ`
	TXT	`m6bll7f2q2d2uidl6cq273dma0`
	TXT	`miro-verification=0ee36f655f5ce0499683c255714fcdbe990af0e0`
	TXT	`mongodb-site-verification=UyyatYgRcdnc3W9g8StgD1OK8wfcIouE`
	TXT	`onetrust-domain-verification=5ef48d8081ac4ab6adce9ed80c92f4e5`
	TXT	`openai-domain-verification=dv-wb5qFISTkDoktTMXLsDMVuZ0`
	TXT	`pendo-domain-verification=2l9wI_SzXdfdzA0ZCZUES4O0FS0`
	TXT	`v=spf1 include:_spf.google.com include:amazonses.com include:_spf.q4press.com...`
	TXT	`zapier-domain-verification-challenge=fe79b183-171c-432c-bf5d-48b3e73fd0af`
	TXT	`zoho-verification=zb08654551.zmverify.zoho.com`
	SOA	`ns-2.awsdns-00.com`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (87/100)
rank #1299 globally
rank #705 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,020

Same first word

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DNS History

48 records (4 active, 44 former)

○A13.226.238.1102026-02-18 → 2026-03-20 · 31 obs

○ 2026-02-18 14:51:04
● 2026-02-18 22:29:40
○ 2026-02-18 23:42:40
○ 2026-02-19 12:37:38
● 2026-02-19 17:07:06
● 2026-02-20 03:30:48
○ 2026-02-20 04:46:26
○ 2026-02-28 17:48:54
● 2026-03-02 00:13:36
○ 2026-03-02 05:30:34
○ 2026-03-02 23:58:34
● 2026-03-03 01:07:28
○ 2026-03-03 10:49:42
○ 2026-03-03 11:44:24
● 2026-03-04 02:51:12
● 2026-03-04 13:51:40
○ 2026-03-04 16:18:42
○ 2026-03-05 18:13:46
● 2026-03-07 03:13:52
● 2026-03-07 16:55:20
○ 2026-03-07 23:08:24
○ 2026-03-09 03:36:24
● 2026-03-09 15:10:56
○ 2026-03-09 16:41:22
○ 2026-03-12 20:03:28
● 2026-03-14 00:07:52
○ 2026-03-14 05:07:50
○ 2026-03-17 21:59:32
● 2026-03-20 05:41:06
○ 2026-03-20 06:53:48
○ 2026-04-11 20:45:44

○A13.226.238.1132026-02-18 → 2026-03-20 · 31 obs

○A13.226.238.132026-02-18 → 2026-03-20 · 31 obs

○A13.226.238.862026-02-18 → 2026-03-20 · 31 obs

○A13.249.126.1142026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 07:08:56
● 2026-02-18 10:56:46
○ 2026-02-18 14:51:04
○ 2026-04-11 20:45:44

○A13.249.126.662026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 07:08:56
● 2026-02-18 10:56:46
○ 2026-02-18 14:51:04
○ 2026-04-11 20:45:44

○A13.249.126.752026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 07:08:56
● 2026-02-18 10:56:46
○ 2026-02-18 14:51:04
○ 2026-04-11 20:45:44

○A13.249.126.892026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 07:08:56
● 2026-02-18 10:56:46
○ 2026-02-18 14:51:04
○ 2026-04-11 20:45:44

○A143.204.29.262026-03-31 → 2026-04-05 · 16 obs

○ 2026-03-31 01:44:50
● 2026-03-31 08:16:08
○ 2026-03-31 10:35:32
○ 2026-03-31 14:10:52
● 2026-03-31 14:51:34
○ 2026-04-01 00:12:30
○ 2026-04-01 00:43:26
● 2026-04-02 14:56:06
○ 2026-04-03 00:15:58
○ 2026-04-03 03:26:30
● 2026-04-03 05:20:48
○ 2026-04-03 06:38:28
○ 2026-04-04 01:52:58
● 2026-04-05 01:06:24
○ 2026-04-05 02:29:26
○ 2026-04-11 20:45:44

○A143.204.29.32026-03-31 → 2026-04-05 · 16 obs

○A143.204.29.332026-03-31 → 2026-04-05 · 16 obs

○A143.204.29.812026-03-31 → 2026-04-05 · 16 obs

●A18.161.205.1222026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 19:52:10
● 2026-04-11 20:45:42
● 2026-04-11 20:45:44

●A18.161.205.22026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 19:52:10
● 2026-04-11 20:45:42
● 2026-04-11 20:45:44

●A18.161.205.372026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 19:52:10
● 2026-04-11 20:45:42
● 2026-04-11 20:45:44

●A18.161.205.542026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 19:52:10
● 2026-04-11 20:45:42
● 2026-04-11 20:45:44

○A18.238.49.1132026-03-07 → 2026-03-14 · 11 obs

○ 2026-03-07 16:55:20
● 2026-03-07 23:08:24
● 2026-03-08 00:49:02
○ 2026-03-08 06:18:56
● 2026-03-08 13:23:56
● 2026-03-09 03:36:24
○ 2026-03-09 15:10:56
○ 2026-03-14 00:07:52
● 2026-03-14 05:07:50
○ 2026-03-14 14:38:10
○ 2026-04-11 20:45:44

○A18.238.49.122026-03-07 → 2026-03-14 · 11 obs

○A18.238.49.552026-03-07 → 2026-03-14 · 11 obs

○A18.238.49.572026-03-07 → 2026-03-14 · 11 obs

○A18.239.50.592026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 03:58:14
● 2026-03-23 19:14:42
○ 2026-03-24 12:46:10
○ 2026-04-11 20:45:44

○A18.239.50.662026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 03:58:14
● 2026-03-23 19:14:42
○ 2026-03-24 12:46:10
○ 2026-04-11 20:45:44

○A18.239.50.742026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 03:58:14
● 2026-03-23 19:14:42
○ 2026-03-24 12:46:10
○ 2026-04-11 20:45:44

○A18.239.50.922026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 03:58:14
● 2026-03-23 19:14:42
○ 2026-03-24 12:46:10
○ 2026-04-11 20:45:44

○A3.162.247.1032026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-31 08:16:08
● 2026-03-31 10:35:32
○ 2026-03-31 14:10:52
○ 2026-04-11 20:45:44

○A3.162.247.1072026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-31 08:16:08
● 2026-03-31 10:35:32
○ 2026-03-31 14:10:52
○ 2026-04-11 20:45:44

○A3.162.247.362026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-31 08:16:08
● 2026-03-31 10:35:32
○ 2026-03-31 14:10:52
○ 2026-04-11 20:45:44

○A3.162.247.972026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-31 08:16:08
● 2026-03-31 10:35:32
○ 2026-03-31 14:10:52
○ 2026-04-11 20:45:44

○A3.164.206.182026-03-25 → 2026-03-25 · 4 obs

○ 2026-03-24 12:46:10
● 2026-03-25 12:09:42
○ 2026-03-25 23:30:22
○ 2026-04-11 20:45:44

○A3.164.206.212026-03-25 → 2026-03-25 · 4 obs

○ 2026-03-24 12:46:10
● 2026-03-25 12:09:42
○ 2026-03-25 23:30:22
○ 2026-04-11 20:45:44

○A3.164.206.232026-03-25 → 2026-03-25 · 4 obs

○ 2026-03-24 12:46:10
● 2026-03-25 12:09:42
○ 2026-03-25 23:30:22
○ 2026-04-11 20:45:44

○A3.164.206.302026-03-25 → 2026-03-25 · 4 obs

○ 2026-03-24 12:46:10
● 2026-03-25 12:09:42
○ 2026-03-25 23:30:22
○ 2026-04-11 20:45:44

○A3.164.6.332026-03-31 → 2026-04-09 · 15 obs

○ 2026-03-31 10:35:32
● 2026-03-31 14:10:52
○ 2026-03-31 14:51:34
● 2026-04-01 00:12:30
○ 2026-04-01 00:43:26
○ 2026-04-02 14:56:06
● 2026-04-03 00:15:58
○ 2026-04-03 01:08:52
● 2026-04-03 01:55:16
● 2026-04-03 03:26:30
○ 2026-04-03 05:20:48
○ 2026-04-08 15:22:48
● 2026-04-09 00:14:48
○ 2026-04-09 02:18:14
○ 2026-04-11 20:45:44

○A3.164.6.372026-03-31 → 2026-04-09 · 15 obs

○A3.164.6.512026-03-31 → 2026-04-09 · 15 obs

○A3.164.6.602026-03-31 → 2026-04-09 · 15 obs

○A3.174.29.222026-04-09 → 2026-04-11 · 26 obs

○ 2026-04-09 02:18:14
● 2026-04-09 04:31:26
○ 2026-04-09 06:22:46
● 2026-04-09 07:26:18
○ 2026-04-09 12:02:42
● 2026-04-09 15:07:50
● 2026-04-09 15:47:56
○ 2026-04-09 18:55:26
○ 2026-04-09 19:31:12
● 2026-04-09 20:40:46
○ 2026-04-10 00:03:30
○ 2026-04-10 01:11:22
● 2026-04-10 01:51:16
● 2026-04-10 02:22:44
○ 2026-04-10 03:22:22
● 2026-04-10 04:02:40
○ 2026-04-10 08:26:26
● 2026-04-10 10:11:08
● 2026-04-10 12:40:12
○ 2026-04-10 16:08:32
● 2026-04-10 23:57:56
○ 2026-04-11 01:36:58
○ 2026-04-11 09:18:28
● 2026-04-11 17:16:36
○ 2026-04-11 19:52:10
○ 2026-04-11 20:45:44

○A3.174.29.382026-04-09 → 2026-04-11 · 26 obs

○A3.174.29.902026-04-09 → 2026-04-11 · 26 obs

○A3.174.29.982026-04-09 → 2026-04-11 · 26 obs

○A52.222.244.1072026-02-18 → 2026-03-21 · 42 obs

○ 2026-02-18 02:04:00
● 2026-02-18 07:08:56
○ 2026-02-18 10:56:46
● 2026-02-18 14:51:04
○ 2026-02-18 22:29:40
○ 2026-02-19 03:18:26
● 2026-02-19 06:33:12
● 2026-02-19 10:11:28
○ 2026-02-19 12:37:38
○ 2026-02-20 03:30:48
● 2026-02-20 04:46:26
● 2026-02-21 08:34:08
○ 2026-02-21 11:30:42
● 2026-02-21 12:48:18
● 2026-02-22 05:08:30
○ 2026-02-24 19:56:52
● 2026-02-25 09:01:40
● 2026-02-28 03:56:28
○ 2026-02-28 17:48:54
○ 2026-03-02 00:13:36
● 2026-03-02 05:30:34
● 2026-03-02 23:58:34
○ 2026-03-03 01:07:28
● 2026-03-03 10:49:42
● 2026-03-03 11:44:24
○ 2026-03-04 02:51:12
○ 2026-03-09 16:41:22
● 2026-03-11 20:57:42
● 2026-03-12 16:27:18
○ 2026-03-12 20:03:28
○ 2026-03-14 05:07:50
● 2026-03-14 14:38:10
● 2026-03-14 18:51:52
○ 2026-03-14 19:23:02
● 2026-03-17 12:02:38
● 2026-03-17 16:45:28
○ 2026-03-17 21:59:32
○ 2026-03-20 06:53:48
● 2026-03-20 08:14:18
● 2026-03-21 03:20:42
○ 2026-03-21 03:58:14
○ 2026-04-11 20:45:44

○A52.222.244.522026-02-18 → 2026-03-21 · 42 obs

○A52.222.244.792026-02-18 → 2026-03-21 · 42 obs

○A52.222.244.812026-02-18 → 2026-03-21 · 42 obs

○A99.86.91.1102026-02-17 → 2026-04-11 · 88 obs

● 2026-02-17 10:49:32
● 2026-02-18 02:04:00
○ 2026-02-18 07:08:56
○ 2026-02-18 22:29:40
● 2026-02-18 23:42:40
● 2026-02-19 03:18:26
○ 2026-02-19 06:33:12
○ 2026-02-19 10:11:28
● 2026-02-19 12:37:38
○ 2026-02-19 17:07:06
○ 2026-02-21 08:34:08
● 2026-02-21 11:30:42
○ 2026-02-21 12:48:18
○ 2026-02-22 05:08:30
● 2026-02-24 19:56:52
○ 2026-02-25 09:01:40
○ 2026-02-28 03:56:28
● 2026-02-28 17:48:54
○ 2026-03-02 00:13:36
○ 2026-03-04 13:51:40
● 2026-03-04 16:18:42
● 2026-03-05 18:13:46
○ 2026-03-07 03:13:52
○ 2026-03-08 00:49:02
● 2026-03-08 06:18:56
○ 2026-03-08 13:23:56
○ 2026-03-09 15:10:56
● 2026-03-09 16:41:22
○ 2026-03-11 20:57:42
○ 2026-03-12 16:27:18
● 2026-03-12 20:03:28
○ 2026-03-14 00:07:52
○ 2026-03-14 18:51:52
● 2026-03-14 19:23:02
○ 2026-03-17 12:02:38
○ 2026-03-17 16:45:28
● 2026-03-17 21:59:32
○ 2026-03-20 05:41:06
● 2026-03-20 06:53:48
○ 2026-03-20 08:14:18
○ 2026-03-21 03:20:42
● 2026-03-21 03:58:14
○ 2026-03-23 19:14:42
● 2026-03-24 12:46:10
○ 2026-03-25 12:09:42
● 2026-03-25 23:30:22
● 2026-03-31 01:44:50
○ 2026-03-31 08:16:08
○ 2026-04-01 00:12:30
● 2026-04-01 00:43:26
○ 2026-04-02 14:56:06
○ 2026-04-03 00:15:58
● 2026-04-03 01:08:52
○ 2026-04-03 01:55:16
○ 2026-04-03 05:20:48
● 2026-04-03 06:38:28
● 2026-04-04 01:52:58
○ 2026-04-05 01:06:24
● 2026-04-05 02:29:26
● 2026-04-08 15:22:48
○ 2026-04-09 00:14:48
● 2026-04-09 02:18:14
○ 2026-04-09 04:31:26
● 2026-04-09 06:22:46
○ 2026-04-09 07:26:18
● 2026-04-09 12:02:42
○ 2026-04-09 15:07:50
○ 2026-04-09 15:47:56
● 2026-04-09 18:55:26
● 2026-04-09 19:31:12
○ 2026-04-09 20:40:46
● 2026-04-10 00:03:30
● 2026-04-10 01:11:22
○ 2026-04-10 01:51:16
○ 2026-04-10 02:22:44
● 2026-04-10 03:22:22
○ 2026-04-10 04:02:40
● 2026-04-10 08:26:26
○ 2026-04-10 10:11:08
○ 2026-04-10 12:40:12
● 2026-04-10 16:08:32
○ 2026-04-10 23:57:56
● 2026-04-11 01:36:58
● 2026-04-11 09:18:28
○ 2026-04-11 17:16:36
● 2026-04-11 19:52:10
○ 2026-04-11 20:45:42
○ 2026-04-11 20:45:44

○A99.86.91.1132026-02-17 → 2026-04-11 · 88 obs

○A99.86.91.162026-02-17 → 2026-04-11 · 88 obs

○A99.86.91.422026-02-17 → 2026-04-11 · 88 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
instructure.com	ns-2.awsdns-00.com, ns-996.awsdns-60.net, ns-1799.awsdns-32.co.uk, ns-1354.awsdns-41.org	1 record

✅ Authoritative Response

Server:205.251.199.7

NS records: ns-2.awsdns-00.com, ns-996.awsdns-60.net, ns-1799.awsdns-32.co.uk, ns-1354.awsdns-41.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructure.com (unsigned zone)

⏱️ Timing

Total: 487ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.161.205.54, 18.161.205.37...`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-2.awsdns-00.com)

Analysis

IP Addresses

ibu.instructure.com maps to four IP numbers: 18.161.205.2, 18.161.205.37, 18.161.205.54 and 18.161.205.122.

Other host names such as drubilg6bwyex.cloudfront.net, steamboatspringscabins.com, psafebet18.com, editor.bonusprint.co.uk and d2aj27bvv0w3qe.cloudfront.net share IPs with ibu.instructure.com.

ibu.instructure.com - robtex.com