iscd.instructure.com - dns.ninja

`iscd.instructure.com`

DNSSEC	⚠️ Not signed
A	3.171.38.15^{🇺🇸 Amazon3.171.36.0/22}
		PTR	`server-3-171-38-15.iad61.r.cloudfront.net`
A	3.171.38.21^{🇺🇸 Amazon3.171.36.0/22}
A	3.171.38.22^{🇺🇸 Amazon3.171.36.0/22}
A	3.171.38.83^{🇺🇸 Amazon3.171.36.0/22}

`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-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=Som6bbrVvI5NLh3lTcpNSbp6_0GpFezQQ9xo6CrSHOQ`
	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	`sprout-social-715adb3f-6166-4bc5-b3d9-b1faf326db31`
	TXT	`stripe-verification=B0532755BD8D4E0C6B601C3FCDB1DF203E57A8D2CDA9A7F9F84F8BD64...`
	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 #1489 globally
rank #796 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #2,143

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DNS History

36 records (4 active, 32 former)

○NSns-1354.awsdns-41.org2026-02-19 → 2026-08-11 · 2 obs

○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○NSns-1799.awsdns-32.co.uk2026-02-19 → 2026-08-11 · 2 obs

○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○NSns-2.awsdns-00.com2026-02-19 → 2026-08-11 · 2 obs

○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○NSns-996.awsdns-60.net2026-02-19 → 2026-08-11 · 2 obs

○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○A13.32.16.1082026-08-03 → 2026-08-09 · 22 obs

○ 2026-08-02 15:50:54
● 2026-08-03 00:17:28
○ 2026-08-03 06:08:08
● 2026-08-03 11:37:54
○ 2026-08-03 22:09:00
● 2026-08-04 00:29:04
○ 2026-08-04 15:13:20
● 2026-08-04 17:53:10
○ 2026-08-04 19:33:56
● 2026-08-04 21:19:06
○ 2026-08-06 02:11:10
● 2026-08-06 20:38:26
○ 2026-08-07 08:11:18
● 2026-08-07 17:26:38
○ 2026-08-08 00:31:58
● 2026-08-08 01:31:38
○ 2026-08-08 15:22:00
● 2026-08-09 03:44:24
○ 2026-08-09 07:23:02
● 2026-08-09 10:33:06
○ 2026-08-10 08:19:54
○ 2026-08-11 14:25:38

○A13.32.16.232026-08-03 → 2026-08-09 · 22 obs

○A13.32.16.372026-08-03 → 2026-08-09 · 22 obs

○A13.32.16.502026-08-03 → 2026-08-09 · 22 obs

○A13.35.107.1012026-07-17 → 2026-07-17 · 4 obs

○ 2026-02-19 04:22:50
● 2026-07-17 02:58:20
○ 2026-08-02 15:50:54
○ 2026-08-11 14:25:38

○A13.35.107.1162026-07-17 → 2026-07-17 · 4 obs

○ 2026-02-19 04:22:50
● 2026-07-17 02:58:20
○ 2026-08-02 15:50:54
○ 2026-08-11 14:25:38

○A13.35.107.632026-07-17 → 2026-07-17 · 4 obs

○ 2026-02-19 04:22:50
● 2026-07-17 02:58:20
○ 2026-08-02 15:50:54
○ 2026-08-11 14:25:38

○A13.35.107.82026-07-17 → 2026-07-17 · 4 obs

○ 2026-02-19 04:22:50
● 2026-07-17 02:58:20
○ 2026-08-02 15:50:54
○ 2026-08-11 14:25:38

○A18.161.21.1082026-08-02 → 2026-08-02 · 4 obs

○ 2026-07-17 02:58:20
● 2026-08-02 15:50:54
○ 2026-08-03 00:17:28
○ 2026-08-11 14:25:38

○A18.161.21.1282026-08-02 → 2026-08-02 · 4 obs

○ 2026-07-17 02:58:20
● 2026-08-02 15:50:54
○ 2026-08-03 00:17:28
○ 2026-08-11 14:25:38

○A18.161.21.342026-08-02 → 2026-08-02 · 4 obs

○ 2026-07-17 02:58:20
● 2026-08-02 15:50:54
○ 2026-08-03 00:17:28
○ 2026-08-11 14:25:38

○A18.161.21.822026-08-02 → 2026-08-02 · 4 obs

○ 2026-07-17 02:58:20
● 2026-08-02 15:50:54
○ 2026-08-03 00:17:28
○ 2026-08-11 14:25:38

○A18.67.145.1032026-08-09 → 2026-08-10 · 6 obs

○ 2026-08-09 03:44:24
● 2026-08-09 07:23:02
○ 2026-08-09 10:33:06
● 2026-08-10 10:27:04
○ 2026-08-10 14:06:48
○ 2026-08-11 14:25:38

○A18.67.145.392026-08-09 → 2026-08-10 · 6 obs

○ 2026-08-09 03:44:24
● 2026-08-09 07:23:02
○ 2026-08-09 10:33:06
● 2026-08-10 10:27:04
○ 2026-08-10 14:06:48
○ 2026-08-11 14:25:38

○A18.67.145.692026-08-09 → 2026-08-10 · 6 obs

○ 2026-08-09 03:44:24
● 2026-08-09 07:23:02
○ 2026-08-09 10:33:06
● 2026-08-10 10:27:04
○ 2026-08-10 14:06:48
○ 2026-08-11 14:25:38

○A18.67.145.802026-08-09 → 2026-08-10 · 6 obs

○ 2026-08-09 03:44:24
● 2026-08-09 07:23:02
○ 2026-08-09 10:33:06
● 2026-08-10 10:27:04
○ 2026-08-10 14:06:48
○ 2026-08-11 14:25:38

○A3.164.68.1002026-08-08 → 2026-08-08 · 4 obs

○ 2026-08-07 17:26:38
● 2026-08-08 00:31:58
○ 2026-08-08 01:31:38
○ 2026-08-11 14:25:38

○A3.164.68.1032026-08-08 → 2026-08-08 · 4 obs

○ 2026-08-07 17:26:38
● 2026-08-08 00:31:58
○ 2026-08-08 01:31:38
○ 2026-08-11 14:25:38

○A3.164.68.642026-08-08 → 2026-08-08 · 4 obs

○ 2026-08-07 17:26:38
● 2026-08-08 00:31:58
○ 2026-08-08 01:31:38
○ 2026-08-11 14:25:38

○A3.164.68.722026-08-08 → 2026-08-08 · 4 obs

○ 2026-08-07 17:26:38
● 2026-08-08 00:31:58
○ 2026-08-08 01:31:38
○ 2026-08-11 14:25:38

●A3.171.38.152026-08-03 → 2026-08-11 · 15 obs

○ 2026-08-03 00:17:28
● 2026-08-03 06:08:08
○ 2026-08-03 11:37:54
● 2026-08-04 15:13:20
○ 2026-08-04 17:53:10
● 2026-08-06 02:11:10
○ 2026-08-06 20:38:26
● 2026-08-07 08:11:18
○ 2026-08-07 17:26:38
● 2026-08-08 15:22:00
○ 2026-08-09 03:44:24
● 2026-08-10 08:19:54
○ 2026-08-10 10:27:04
● 2026-08-10 14:06:48
● 2026-08-11 14:25:38

●A3.171.38.212026-08-03 → 2026-08-11 · 15 obs

●A3.171.38.222026-08-03 → 2026-08-11 · 15 obs

●A3.171.38.832026-08-03 → 2026-08-11 · 15 obs

○A52.62.1.2022017-04-10 → 2017-04-10 · 3 obs

● 2017-04-10 07:43:42
○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○A52.64.59.392017-04-10 → 2017-04-10 · 3 obs

● 2017-04-10 07:43:42
○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○A99.84.41.282026-08-03 → 2026-08-04 · 6 obs

○ 2026-08-03 11:37:54
● 2026-08-03 22:09:00
○ 2026-08-04 00:29:04
● 2026-08-04 19:33:56
○ 2026-08-04 21:19:06
○ 2026-08-11 14:25:38

○A99.84.41.552026-08-03 → 2026-08-04 · 6 obs

○ 2026-08-03 11:37:54
● 2026-08-03 22:09:00
○ 2026-08-04 00:29:04
● 2026-08-04 19:33:56
○ 2026-08-04 21:19:06
○ 2026-08-11 14:25:38

○A99.84.41.702026-08-03 → 2026-08-04 · 6 obs

○ 2026-08-03 11:37:54
● 2026-08-03 22:09:00
○ 2026-08-04 00:29:04
● 2026-08-04 19:33:56
○ 2026-08-04 21:19:06
○ 2026-08-11 14:25:38

○A99.84.41.922026-08-03 → 2026-08-04 · 6 obs

○ 2026-08-03 11:37:54
● 2026-08-03 22:09:00
○ 2026-08-04 00:29:04
● 2026-08-04 19:33:56
○ 2026-08-04 21:19:06
○ 2026-08-11 14:25:38

○CNAMEcluster41-1416732229.ap-southeast-2.elb.amazonaws.com2017-04-10 → 2017-04-10 · 3 obs

● 2017-04-10 07:43:42
○ 2026-02-19 04:22:50
○ 2026-08-11 14:25:38

○CNAMEcluster41.instructure.com2017-04-10 → 2026-04-10 · 4 obs

● 2017-04-10 07:43:42
● 2026-04-10 02:12:14
○ 2026-07-17 02:58:20
○ 2026-08-11 14:25:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, m.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:205.251.192.2

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: 415ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.171.38.83, 3.171.38.15...`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

iscd.instructure.com has four IP addresses: 3.171.38.15, 3.171.38.21, 3.171.38.22 and 3.171.38.83.

Additional host names — ulidtools.com, ardownload.wip3.(0x736578)treffen24.com, admin.fluxlists.com and two others — share IP numbers with iscd.instructure.com.