`ciit.instructure.com`

DNSSEC	⚠️ Not signed
A	18.239.168.33^{🇺🇸 Amazon18.239.168.0/23}
		PTR	`server-18-239-168-33.bos50.r.cloudfront.net`
A	18.239.168.52^{🇺🇸 Amazon18.239.168.0/23}
A	18.239.168.64^{🇺🇸 Amazon18.239.168.0/23}
A	18.239.168.101^{🇺🇸 Amazon18.239.168.0/23}

`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 #1318 globally
rank #714 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #877

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DNS History

48 records (4 active, 44 former)

○A108.139.113.1132026-04-11 → 2026-04-16 · 29 obs

○ 2026-04-11 00:53:02
● 2026-04-11 02:09:22
● 2026-04-11 15:13:56
○ 2026-04-11 19:24:12
○ 2026-04-12 04:51:18
● 2026-04-12 11:53:22
● 2026-04-12 12:52:20
○ 2026-04-12 14:02:36
○ 2026-04-13 00:13:56
● 2026-04-13 01:57:30
● 2026-04-13 06:46:46
○ 2026-04-13 09:32:24
● 2026-04-13 10:24:32
○ 2026-04-13 10:56:40
● 2026-04-13 13:52:26
○ 2026-04-13 15:50:30
● 2026-04-13 17:17:20
○ 2026-04-14 00:39:42
○ 2026-04-14 06:37:02
● 2026-04-14 08:37:54
○ 2026-04-14 09:14:16
● 2026-04-14 10:48:12
○ 2026-04-14 21:44:44
● 2026-04-15 00:00:00
○ 2026-04-15 04:08:44
● 2026-04-15 05:45:58
● 2026-04-16 01:43:58
○ 2026-04-17 00:30:44
○ 2026-04-24 11:05:48

○A108.139.113.232026-04-11 → 2026-04-16 · 29 obs

○A108.139.113.512026-04-11 → 2026-04-16 · 29 obs

○A108.139.113.592026-04-11 → 2026-04-16 · 29 obs

○A13.225.107.1172026-03-28 → 2026-04-23 · 43 obs

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

○A13.225.107.452026-03-28 → 2026-04-23 · 43 obs

○A13.225.107.542026-03-28 → 2026-04-23 · 43 obs

○A13.225.107.912026-03-28 → 2026-04-23 · 43 obs

○A13.226.209.22026-03-05 → 2026-04-20 · 38 obs

○ 2026-03-04 23:30:28
● 2026-03-05 00:12:50
● 2026-03-05 05:55:46
○ 2026-03-05 07:38:22
○ 2026-03-06 11:39:00
● 2026-03-07 01:20:34
● 2026-03-07 03:28:56
○ 2026-03-07 06:35:08
○ 2026-03-17 20:14:34
● 2026-03-17 23:52:10
○ 2026-03-18 03:35:48
○ 2026-03-18 21:06:44
● 2026-03-19 00:14:44
○ 2026-03-19 02:07:54
○ 2026-03-19 20:53:58
● 2026-03-20 00:14:06
○ 2026-03-20 02:55:42
○ 2026-03-21 09:45:50
● 2026-03-21 12:23:48
○ 2026-03-21 18:33:04
○ 2026-03-22 02:10:46
● 2026-03-23 00:13:36
○ 2026-03-23 00:45:00
○ 2026-03-25 12:39:54
● 2026-03-26 00:13:48
○ 2026-03-26 03:27:04
○ 2026-03-27 14:38:04
● 2026-03-28 00:12:54
○ 2026-03-28 02:58:40
● 2026-03-28 07:01:38
○ 2026-03-28 10:54:56
● 2026-03-28 11:51:50
○ 2026-03-28 12:22:44
○ 2026-04-19 15:12:06
● 2026-04-19 21:31:12
● 2026-04-20 00:26:28
○ 2026-04-20 12:04:20
○ 2026-04-24 11:05:48

○A13.226.209.262026-03-05 → 2026-04-20 · 38 obs

○A13.226.209.922026-03-05 → 2026-04-20 · 38 obs

○A13.226.209.992026-03-05 → 2026-04-20 · 38 obs

○A13.33.153.1152026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-30 09:09:22
● 2026-03-31 04:46:48
○ 2026-03-31 06:00:36
○ 2026-04-24 11:05:48

○A13.33.153.512026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-30 09:09:22
● 2026-03-31 04:46:48
○ 2026-03-31 06:00:36
○ 2026-04-24 11:05:48

○A13.33.153.752026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-30 09:09:22
● 2026-03-31 04:46:48
○ 2026-03-31 06:00:36
○ 2026-04-24 11:05:48

○A13.33.153.972026-03-31 → 2026-03-31 · 4 obs

○ 2026-03-30 09:09:22
● 2026-03-31 04:46:48
○ 2026-03-31 06:00:36
○ 2026-04-24 11:05:48

○A13.33.235.392026-03-24 → 2026-03-27 · 13 obs

○ 2026-03-23 17:23:24
● 2026-03-24 06:56:46
● 2026-03-25 03:27:10
○ 2026-03-25 12:39:54
○ 2026-03-26 03:27:04
● 2026-03-26 11:45:32
○ 2026-03-27 01:55:18
● 2026-03-27 02:31:46
○ 2026-03-27 03:21:16
● 2026-03-27 04:12:44
● 2026-03-27 05:00:22
○ 2026-03-27 14:38:04
○ 2026-04-24 11:05:48

○A13.33.235.712026-03-24 → 2026-03-27 · 13 obs

○A13.33.235.722026-03-24 → 2026-03-27 · 13 obs

○A13.33.235.862026-03-24 → 2026-03-27 · 13 obs

○A18.154.206.1282026-03-01 → 2026-03-21 · 40 obs

● 2026-03-01 21:31:44
○ 2026-03-03 22:58:52
○ 2026-03-05 05:55:46
● 2026-03-05 07:38:22
○ 2026-03-05 15:11:26
○ 2026-03-06 04:02:48
● 2026-03-06 04:39:20
○ 2026-03-06 11:39:00
○ 2026-03-07 06:35:08
● 2026-03-08 05:53:42
○ 2026-03-08 07:46:12
● 2026-03-09 08:58:30
● 2026-03-09 15:23:48
○ 2026-03-09 22:24:06
○ 2026-03-14 17:20:10
● 2026-03-15 17:49:58
○ 2026-03-15 18:39:36
● 2026-03-15 20:20:34
○ 2026-03-15 21:29:02
○ 2026-03-16 01:37:02
● 2026-03-16 14:27:30
○ 2026-03-17 05:36:28
● 2026-03-17 07:33:14
○ 2026-03-17 12:22:28
● 2026-03-17 13:25:14
● 2026-03-17 20:14:34
○ 2026-03-17 23:52:10
○ 2026-03-18 13:20:30
● 2026-03-18 14:46:24
○ 2026-03-18 21:06:44
○ 2026-03-19 00:14:44
● 2026-03-19 02:07:54
○ 2026-03-19 04:04:50
○ 2026-03-20 02:55:42
● 2026-03-20 08:00:22
○ 2026-03-20 17:15:38
○ 2026-03-21 05:58:42
● 2026-03-21 09:45:50
○ 2026-03-21 12:23:48
○ 2026-04-24 11:05:48

○A18.154.206.312026-03-01 → 2026-03-21 · 40 obs

○A18.154.206.372026-03-01 → 2026-03-21 · 40 obs

○A18.154.206.62026-03-01 → 2026-03-21 · 40 obs

○A18.165.116.1062026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-30 08:31:28
● 2026-03-30 09:09:22
○ 2026-03-31 04:46:48
○ 2026-04-24 11:05:48

○A18.165.116.1082026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-30 08:31:28
● 2026-03-30 09:09:22
○ 2026-03-31 04:46:48
○ 2026-04-24 11:05:48

○A18.165.116.882026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-30 08:31:28
● 2026-03-30 09:09:22
○ 2026-03-31 04:46:48
○ 2026-04-24 11:05:48

○A18.165.116.952026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-30 08:31:28
● 2026-03-30 09:09:22
○ 2026-03-31 04:46:48
○ 2026-04-24 11:05:48

○A18.173.132.222026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-14 11:18:24
● 2026-03-14 15:59:18
○ 2026-03-14 17:20:10
○ 2026-04-24 11:05:48

○A18.173.132.42026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-14 11:18:24
● 2026-03-14 15:59:18
○ 2026-03-14 17:20:10
○ 2026-04-24 11:05:48

○A18.173.132.662026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-14 11:18:24
● 2026-03-14 15:59:18
○ 2026-03-14 17:20:10
○ 2026-04-24 11:05:48

○A18.173.132.992026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-14 11:18:24
● 2026-03-14 15:59:18
○ 2026-03-14 17:20:10
○ 2026-04-24 11:05:48

●A18.239.168.1012026-04-23 → 2026-04-24 · 5 obs

○ 2026-04-23 20:10:26
● 2026-04-23 21:12:34
○ 2026-04-23 23:38:56
● 2026-04-24 11:05:46
● 2026-04-24 11:05:48

●A18.239.168.332026-04-23 → 2026-04-24 · 5 obs

○ 2026-04-23 20:10:26
● 2026-04-23 21:12:34
○ 2026-04-23 23:38:56
● 2026-04-24 11:05:46
● 2026-04-24 11:05:48

●A18.239.168.522026-04-23 → 2026-04-24 · 5 obs

○ 2026-04-23 20:10:26
● 2026-04-23 21:12:34
○ 2026-04-23 23:38:56
● 2026-04-24 11:05:46
● 2026-04-24 11:05:48

●A18.239.168.642026-04-23 → 2026-04-24 · 5 obs

○ 2026-04-23 20:10:26
● 2026-04-23 21:12:34
○ 2026-04-23 23:38:56
● 2026-04-24 11:05:46
● 2026-04-24 11:05:48

○A18.245.218.1162026-03-03 → 2026-04-22 · 127 obs

○ 2026-03-01 21:31:44
● 2026-03-03 22:58:52
● 2026-03-04 23:30:28
○ 2026-03-05 00:12:50
○ 2026-03-05 07:38:22
● 2026-03-05 15:11:26
● 2026-03-06 04:02:48
○ 2026-03-06 04:39:20
● 2026-03-06 11:39:00
○ 2026-03-07 01:20:34
○ 2026-03-07 03:28:56
● 2026-03-07 06:35:08
○ 2026-03-08 05:53:42
● 2026-03-08 07:46:12
○ 2026-03-09 08:58:30
○ 2026-03-09 15:23:48
● 2026-03-09 22:24:06
● 2026-03-14 11:18:24
○ 2026-03-14 15:59:18
● 2026-03-14 17:20:10
○ 2026-03-15 17:49:58
● 2026-03-15 18:39:36
○ 2026-03-15 20:20:34
● 2026-03-15 21:29:02
● 2026-03-16 01:37:02
○ 2026-03-16 14:27:30
● 2026-03-17 05:36:28
○ 2026-03-17 07:33:14
● 2026-03-17 12:22:28
○ 2026-03-17 13:25:14
○ 2026-03-17 23:52:10
● 2026-03-18 03:35:48
● 2026-03-18 13:20:30
○ 2026-03-18 14:46:24
● 2026-03-18 21:06:44
○ 2026-03-19 00:14:44
○ 2026-03-19 02:07:54
● 2026-03-19 04:04:50
● 2026-03-19 20:53:58
○ 2026-03-20 00:14:06
● 2026-03-20 02:55:42
○ 2026-03-20 08:00:22
● 2026-03-20 17:15:38
● 2026-03-21 05:58:42
○ 2026-03-21 09:45:50
○ 2026-03-21 12:23:48
● 2026-03-21 18:33:04
● 2026-03-22 02:10:46
○ 2026-03-23 00:13:36
● 2026-03-23 00:45:00
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○A18.245.218.372026-03-03 → 2026-04-22 · 127 obs

○A18.245.218.52026-03-03 → 2026-04-22 · 127 obs

○A18.245.218.962026-03-03 → 2026-04-22 · 127 obs

○A54.230.201.1062026-04-23 → 2026-04-23 · 8 obs

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○A54.230.201.252026-04-23 → 2026-04-23 · 8 obs

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○A54.230.201.342026-04-23 → 2026-04-23 · 8 obs

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○A54.230.201.442026-04-23 → 2026-04-23 · 8 obs

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○A99.84.132.1162026-03-31 → 2026-04-06 · 17 obs

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○A99.84.132.1222026-03-31 → 2026-04-06 · 17 obs

○A99.84.132.142026-03-31 → 2026-04-06 · 17 obs

○A99.84.132.332026-03-31 → 2026-04-06 · 17 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	2 records

✅ Authoritative Response

Server:205.251.197.74

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: 716ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.239.168.101, 18.239.168.52...`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

ciit.instructure.com maps to four IP numbers: 18.239.168.33, 18.239.168.52, 18.239.168.64 and 18.239.168.101.

other host names include fisherpaykel.com, famli.colorado.gov, saguachecoclerk.colorado.gov, links.dev-fox.scalapay.com and emea.retail.offer-display.live.superbet.ro; they share IP numbers with ciit.instructure.com.

ciit.instructure.com - robtex.com