`usask.instructure.com`

DNSSEC	⚠️ Not signed
A	3.164.6.33^{🇺🇸 Amazon3.164.4.0/22}
		PTR	`server-3-164-6-33.gru1.r.cloudfront.net`
A	3.164.6.37^{🇺🇸 Amazon3.164.4.0/22}
A	3.164.6.51^{🇺🇸 Amazon3.164.4.0/22}
A	3.164.6.60^{🇺🇸 Amazon3.164.4.0/22}

`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-4mh4xs=A4vkPXqJIA4VVi9GAbxDEPohr`
	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 #1289 globally
rank #698 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,181

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DNS History

28 records (4 active, 24 former)

○A13.226.238.1102026-03-03 → 2026-03-24 · 25 obs

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

○A13.226.238.1132026-03-03 → 2026-03-24 · 25 obs

○A13.226.238.132026-03-03 → 2026-03-24 · 25 obs

○A13.226.238.862026-03-03 → 2026-03-24 · 25 obs

○A13.33.235.1112026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 23:39:58
● 2026-03-27 09:01:40
○ 2026-03-27 21:34:14
○ 2026-03-30 01:13:20

○A13.33.235.152026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 23:39:58
● 2026-03-27 09:01:40
○ 2026-03-27 21:34:14
○ 2026-03-30 01:13:20

○A13.33.235.262026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 23:39:58
● 2026-03-27 09:01:40
○ 2026-03-27 21:34:14
○ 2026-03-30 01:13:20

○A13.33.235.932026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 23:39:58
● 2026-03-27 09:01:40
○ 2026-03-27 21:34:14
○ 2026-03-30 01:13:20

○A18.238.49.1132026-03-07 → 2026-03-14 · 13 obs

○ 2026-03-07 11:17:02
● 2026-03-07 23:08:24
● 2026-03-08 00:49:02
○ 2026-03-08 02:12:26
○ 2026-03-08 05:51:46
● 2026-03-08 13:23:56
○ 2026-03-08 14:13:26
● 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 10:06:36
○ 2026-03-30 01:13:20

○A18.238.49.122026-03-07 → 2026-03-14 · 13 obs

○A18.238.49.552026-03-07 → 2026-03-14 · 13 obs

○A18.238.49.572026-03-07 → 2026-03-14 · 13 obs

○A3.164.206.182026-03-25 → 2026-03-25 · 5 obs

○ 2026-03-24 17:46:40
● 2026-03-25 11:25:12
● 2026-03-25 13:26:06
○ 2026-03-25 23:39:58
○ 2026-03-30 01:13:20

○A3.164.206.212026-03-25 → 2026-03-25 · 5 obs

○ 2026-03-24 17:46:40
● 2026-03-25 11:25:12
● 2026-03-25 13:26:06
○ 2026-03-25 23:39:58
○ 2026-03-30 01:13:20

○A3.164.206.232026-03-25 → 2026-03-25 · 5 obs

○ 2026-03-24 17:46:40
● 2026-03-25 11:25:12
● 2026-03-25 13:26:06
○ 2026-03-25 23:39:58
○ 2026-03-30 01:13:20

○A3.164.206.302026-03-25 → 2026-03-25 · 5 obs

○ 2026-03-24 17:46:40
● 2026-03-25 11:25:12
● 2026-03-25 13:26:06
○ 2026-03-25 23:39:58
○ 2026-03-30 01:13:20

●A3.164.6.332026-03-28 → 2026-03-30 · 3 obs

○ 2026-03-28 09:41:28
● 2026-03-28 16:20:16
● 2026-03-30 01:13:20

●A3.164.6.372026-03-28 → 2026-03-30 · 3 obs

○ 2026-03-28 09:41:28
● 2026-03-28 16:20:16
● 2026-03-30 01:13:20

●A3.164.6.512026-03-28 → 2026-03-30 · 3 obs

○ 2026-03-28 09:41:28
● 2026-03-28 16:20:16
● 2026-03-30 01:13:20

●A3.164.6.602026-03-28 → 2026-03-30 · 3 obs

○ 2026-03-28 09:41:28
● 2026-03-28 16:20:16
● 2026-03-30 01:13:20

○A52.222.244.1072026-02-25 → 2026-03-28 · 47 obs

● 2026-02-25 05:59:50
● 2026-02-28 03:56:28
○ 2026-02-28 17:48:52
● 2026-03-01 17:39:04
● 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 02:41:56
○ 2026-03-05 18:13:46
● 2026-03-06 20:31:36
○ 2026-03-07 03:36:36
○ 2026-03-08 13:23:56
● 2026-03-08 14:13:26
○ 2026-03-09 03:36:24
○ 2026-03-10 00:18:22
● 2026-03-10 02:14:48
○ 2026-03-10 03:46:20
● 2026-03-10 06:26:10
○ 2026-03-11 07:33:36
● 2026-03-11 20:57:42
● 2026-03-12 16:27:18
○ 2026-03-12 20:03:28
● 2026-03-13 00:26:16
○ 2026-03-13 13:42:44
○ 2026-03-14 05:07:50
● 2026-03-14 10:06:36
● 2026-03-14 18:51:52
○ 2026-03-14 19:23:02
○ 2026-03-15 02:49:08
● 2026-03-15 10:50:48
○ 2026-03-17 11:04:00
● 2026-03-17 16:45:28
○ 2026-03-18 08:21:48
○ 2026-03-20 03:01:34
● 2026-03-20 04:27:14
○ 2026-03-20 05:41:06
○ 2026-03-20 06:53:48
● 2026-03-20 07:59:56
● 2026-03-21 03:20:42
○ 2026-03-21 03:58:14
● 2026-03-21 23:14:58
○ 2026-03-23 07:50:56
○ 2026-03-27 21:34:14
● 2026-03-28 09:41:28
○ 2026-03-28 16:20:16
○ 2026-03-30 01:13:20

○A52.222.244.522026-02-25 → 2026-03-28 · 47 obs

○A52.222.244.792026-02-25 → 2026-03-28 · 47 obs

○A52.222.244.812026-02-25 → 2026-03-28 · 47 obs

○A99.86.91.1102026-02-28 → 2026-03-27 · 56 obs

○ 2026-02-28 03:56:28
● 2026-02-28 17:48:52
○ 2026-03-01 17:39:04
○ 2026-03-03 11:44:24
● 2026-03-04 02:41:56
● 2026-03-05 18:13:46
○ 2026-03-06 20:31:36
○ 2026-03-07 03:36:36
● 2026-03-07 11:17:02
○ 2026-03-07 23:08:24
○ 2026-03-08 00:49:02
● 2026-03-08 02:12:26
● 2026-03-08 05:51:46
○ 2026-03-08 13:23:56
○ 2026-03-09 15:10:56
● 2026-03-09 16:41:22
● 2026-03-10 00:18:22
○ 2026-03-10 02:14:48
● 2026-03-10 03:46:20
○ 2026-03-10 06:26:10
● 2026-03-11 07:33:36
○ 2026-03-11 20:57:42
○ 2026-03-12 16:27:18
● 2026-03-12 20:03:28
○ 2026-03-13 00:26:16
● 2026-03-13 13:42:44
○ 2026-03-14 00:07:52
○ 2026-03-14 18:51:52
● 2026-03-14 19:23:02
● 2026-03-15 02:49:08
○ 2026-03-15 10:50:48
● 2026-03-17 11:04:00
○ 2026-03-17 16:45:28
● 2026-03-18 08:21:48
● 2026-03-18 13:50:08
○ 2026-03-19 21:11:02
● 2026-03-20 03:01:34
○ 2026-03-20 04:27:14
○ 2026-03-20 05:41:06
● 2026-03-20 06:53:48
○ 2026-03-20 07:59:56
○ 2026-03-21 03:20:42
● 2026-03-21 03:58:14
○ 2026-03-21 23:14:58
○ 2026-03-23 07:50:56
● 2026-03-23 09:26:08
○ 2026-03-23 21:29:16
○ 2026-03-24 12:25:46
● 2026-03-24 17:46:40
○ 2026-03-25 11:25:12
○ 2026-03-25 13:26:06
● 2026-03-25 23:39:58
○ 2026-03-27 09:01:40
● 2026-03-27 21:34:14
○ 2026-03-28 09:41:28
○ 2026-03-30 01:13:20

○A99.86.91.1132026-02-28 → 2026-03-27 · 56 obs

○A99.86.91.162026-02-28 → 2026-03-27 · 56 obs

○A99.86.91.422026-02-28 → 2026-03-27 · 56 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:205.251.197.74

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: 732ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.164.6.51, 3.164.6.60...`

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

usask.instructure.com points to four IP numbers: 3.164.6.33, 3.164.6.37, 3.164.6.51 and 3.164.6.60.

Other host names, for instance edu-con.jp, d2r1yp2w7bby2u.cloudfront.net, aity18.cc, electronicaloteria.com and mein-(0x736578)treff.com share IP numbers with usask.instructure.com.

usask.instructure.com - robtex.com