`ldh.instructure.com`

DNSSEC	⚠️ Not signed
A	3.163.10.25^{🇺🇸 Amazon3.163.8.0/22}
		PTR	`server-3-163-10-25.gru3.r.cloudfront.net`
A	3.163.10.73^{🇺🇸 Amazon3.163.8.0/22}
A	3.163.10.109^{🇺🇸 Amazon3.163.8.0/22}
A	3.163.10.128^{🇺🇸 Amazon3.163.8.0/22}

`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 #1285 globally
rank #696 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,189

Same first word

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dlh.org

DNS History

13 records (4 active, 9 former)

○A18.161.205.122026-03-29 → 2026-03-29 · 4 obs

○ 2026-03-29 07:08:38
● 2026-03-29 18:02:46
○ 2026-03-29 21:21:10
○ 2026-03-31 13:40:26

○A18.161.205.292026-03-29 → 2026-03-29 · 4 obs

○ 2026-03-29 07:08:38
● 2026-03-29 18:02:46
○ 2026-03-29 21:21:10
○ 2026-03-31 13:40:26

○A18.161.205.642026-03-29 → 2026-03-29 · 4 obs

○ 2026-03-29 07:08:38
● 2026-03-29 18:02:46
○ 2026-03-29 21:21:10
○ 2026-03-31 13:40:26

○A18.161.205.802026-03-29 → 2026-03-29 · 4 obs

○ 2026-03-29 07:08:38
● 2026-03-29 18:02:46
○ 2026-03-29 21:21:10
○ 2026-03-31 13:40:26

○A216.137.53.112026-03-26 → 2026-03-30 · 7 obs

● 2026-03-26 08:44:24
● 2026-03-28 21:49:08
○ 2026-03-29 07:08:38
○ 2026-03-30 02:14:46
● 2026-03-30 20:29:54
○ 2026-03-31 00:15:56
○ 2026-03-31 13:40:26

○A216.137.53.1192026-03-26 → 2026-03-30 · 7 obs

● 2026-03-26 08:44:24
● 2026-03-28 21:49:08
○ 2026-03-29 07:08:38
○ 2026-03-30 02:14:46
● 2026-03-30 20:29:54
○ 2026-03-31 00:15:56
○ 2026-03-31 13:40:26

○A216.137.53.482026-03-26 → 2026-03-30 · 7 obs

● 2026-03-26 08:44:24
● 2026-03-28 21:49:08
○ 2026-03-29 07:08:38
○ 2026-03-30 02:14:46
● 2026-03-30 20:29:54
○ 2026-03-31 00:15:56
○ 2026-03-31 13:40:26

○A216.137.53.692026-03-26 → 2026-03-30 · 7 obs

● 2026-03-26 08:44:24
● 2026-03-28 21:49:08
○ 2026-03-29 07:08:38
○ 2026-03-30 02:14:46
● 2026-03-30 20:29:54
○ 2026-03-31 00:15:56
○ 2026-03-31 13:40:26

●A3.163.10.1092026-03-29 → 2026-03-31 · 8 obs

○ 2026-03-28 21:49:08
● 2026-03-29 07:08:38
○ 2026-03-29 18:02:46
● 2026-03-29 21:21:10
● 2026-03-30 02:14:46
○ 2026-03-30 20:29:54
● 2026-03-31 00:15:56
● 2026-03-31 13:40:26

●A3.163.10.1282026-03-29 → 2026-03-31 · 8 obs

○ 2026-03-28 21:49:08
● 2026-03-29 07:08:38
○ 2026-03-29 18:02:46
● 2026-03-29 21:21:10
● 2026-03-30 02:14:46
○ 2026-03-30 20:29:54
● 2026-03-31 00:15:56
● 2026-03-31 13:40:26

●A3.163.10.252026-03-29 → 2026-03-31 · 8 obs

○ 2026-03-28 21:49:08
● 2026-03-29 07:08:38
○ 2026-03-29 18:02:46
● 2026-03-29 21:21:10
● 2026-03-30 02:14:46
○ 2026-03-30 20:29:54
● 2026-03-31 00:15:56
● 2026-03-31 13:40:26

●A3.163.10.732026-03-29 → 2026-03-31 · 8 obs

○ 2026-03-28 21:49:08
● 2026-03-29 07:08:38
○ 2026-03-29 18:02:46
● 2026-03-29 21:21:10
● 2026-03-30 02:14:46
○ 2026-03-30 20:29:54
● 2026-03-31 00:15:56
● 2026-03-31 13:40:26

○CNAMEcluster15.instructure.com2017-08-22 → 2026-02-19 · 4 obs

● 2017-08-22 21:28:48
● 2026-02-19 01:53:50
○ 2026-03-26 08:44:24
○ 2026-03-31 13:40:26

🔍 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: 249ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.163.10.109, 3.163.10.25...`

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

ldh.instructure.com resolves to four IPs: 3.163.10.25, 3.163.10.73, 3.163.10.109 and 3.163.10.128.

Other host names, for instance fiumalbo.it, afa-play.com, mailin2.salford.gov.uk, d3kq284oxwqhmx.cloudfront.net and arafa-icecream.com share IP numbers with ldh.instructure.com.

ldh.instructure.com - robtex.com