rcs.instructure.com - dns.ninja

`rcs.instructure.com`

DNSSEC	⚠️ Not signed
A	13.35.107.30^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
		PTR	`server-13-35-107-30.phl51.r.cloudfront.net`
A	13.35.107.49^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.54^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.66^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}

`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	`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 #1450 globally
rank #778 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,870

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DNS History

49 records (4 active, 45 former)

○A108.138.103.1072026-07-01 → 2026-07-23 · 20 obs

○ 2026-06-30 11:36:00
● 2026-07-01 01:27:44
○ 2026-07-02 20:57:34
● 2026-07-03 12:09:06
○ 2026-07-13 18:03:52
● 2026-07-13 23:32:02
○ 2026-07-14 01:36:08
● 2026-07-14 14:32:38
○ 2026-07-16 18:46:06
● 2026-07-17 02:27:18
○ 2026-07-18 21:23:12
● 2026-07-19 10:00:46
○ 2026-07-19 19:17:20
● 2026-07-19 20:27:10
○ 2026-07-20 20:34:20
● 2026-07-22 02:34:42
○ 2026-07-23 06:30:52
● 2026-07-23 23:22:42
○ 2026-07-24 12:29:38
○ 2026-07-24 14:59:08

○A108.138.103.32026-07-01 → 2026-07-23 · 20 obs

○A108.138.103.572026-07-01 → 2026-07-23 · 20 obs

○A108.138.103.992026-07-01 → 2026-07-23 · 20 obs

○A108.158.186.1162026-07-02 → 2026-07-24 · 16 obs

○ 2026-07-02 20:57:34
● 2026-07-02 22:31:50
○ 2026-07-03 12:09:06
● 2026-07-13 18:34:32
○ 2026-07-13 19:33:16
● 2026-07-13 21:31:06
○ 2026-07-13 23:32:02
● 2026-07-14 01:36:08
○ 2026-07-14 03:18:20
● 2026-07-14 07:08:14
○ 2026-07-14 14:32:38
● 2026-07-23 07:50:48
○ 2026-07-23 23:22:42
● 2026-07-24 12:29:38
○ 2026-07-24 14:59:06
○ 2026-07-24 14:59:08

○A108.158.186.22026-07-02 → 2026-07-24 · 16 obs

○A108.158.186.342026-07-02 → 2026-07-24 · 16 obs

○A108.158.186.992026-07-02 → 2026-07-24 · 16 obs

●A13.35.107.302026-07-13 → 2026-07-24 · 17 obs

○ 2026-07-03 12:09:06
● 2026-07-13 18:03:52
○ 2026-07-13 18:34:32
● 2026-07-13 19:33:16
○ 2026-07-13 21:31:06
● 2026-07-14 03:18:20
○ 2026-07-14 07:08:14
● 2026-07-16 18:46:06
○ 2026-07-16 21:04:38
● 2026-07-19 19:17:20
○ 2026-07-19 20:27:10
● 2026-07-20 20:34:20
○ 2026-07-20 21:29:44
● 2026-07-23 06:30:52
○ 2026-07-23 07:50:48
● 2026-07-24 14:59:06
● 2026-07-24 14:59:08

●A13.35.107.492026-07-13 → 2026-07-24 · 17 obs

●A13.35.107.542026-07-13 → 2026-07-24 · 17 obs

●A13.35.107.662026-07-13 → 2026-07-24 · 17 obs

○A18.154.110.1102026-07-02 → 2026-07-02 · 4 obs

○ 2026-07-01 01:27:44
● 2026-07-02 20:57:34
○ 2026-07-02 22:31:50
○ 2026-07-24 14:59:08

○A18.154.110.32026-07-02 → 2026-07-02 · 4 obs

○ 2026-07-01 01:27:44
● 2026-07-02 20:57:34
○ 2026-07-02 22:31:50
○ 2026-07-24 14:59:08

○A18.154.110.492026-07-02 → 2026-07-02 · 4 obs

○ 2026-07-01 01:27:44
● 2026-07-02 20:57:34
○ 2026-07-02 22:31:50
○ 2026-07-24 14:59:08

○A18.154.110.522026-07-02 → 2026-07-02 · 4 obs

○ 2026-07-01 01:27:44
● 2026-07-02 20:57:34
○ 2026-07-02 22:31:50
○ 2026-07-24 14:59:08

○A18.160.18.1022026-06-26 → 2026-06-28 · 6 obs

○ 2026-06-25 05:15:26
● 2026-06-26 19:30:42
○ 2026-06-26 22:38:06
● 2026-06-28 16:45:00
○ 2026-06-28 17:27:42
○ 2026-07-24 14:59:08

○A18.160.18.112026-06-26 → 2026-06-28 · 6 obs

○ 2026-06-25 05:15:26
● 2026-06-26 19:30:42
○ 2026-06-26 22:38:06
● 2026-06-28 16:45:00
○ 2026-06-28 17:27:42
○ 2026-07-24 14:59:08

○A18.160.18.1192026-06-26 → 2026-06-28 · 6 obs

○ 2026-06-25 05:15:26
● 2026-06-26 19:30:42
○ 2026-06-26 22:38:06
● 2026-06-28 16:45:00
○ 2026-06-28 17:27:42
○ 2026-07-24 14:59:08

○A18.160.18.1262026-06-26 → 2026-06-28 · 6 obs

○ 2026-06-25 05:15:26
● 2026-06-26 19:30:42
○ 2026-06-26 22:38:06
● 2026-06-28 16:45:00
○ 2026-06-28 17:27:42
○ 2026-07-24 14:59:08

○A18.165.122.1182026-07-16 → 2026-07-18 · 6 obs

○ 2026-07-16 18:46:06
● 2026-07-16 21:04:38
○ 2026-07-17 02:27:18
● 2026-07-18 21:23:12
○ 2026-07-19 10:00:46
○ 2026-07-24 14:59:08

○A18.165.122.562026-07-16 → 2026-07-18 · 6 obs

○ 2026-07-16 18:46:06
● 2026-07-16 21:04:38
○ 2026-07-17 02:27:18
● 2026-07-18 21:23:12
○ 2026-07-19 10:00:46
○ 2026-07-24 14:59:08

○A18.165.122.752026-07-16 → 2026-07-18 · 6 obs

○ 2026-07-16 18:46:06
● 2026-07-16 21:04:38
○ 2026-07-17 02:27:18
● 2026-07-18 21:23:12
○ 2026-07-19 10:00:46
○ 2026-07-24 14:59:08

○A18.165.122.942026-07-16 → 2026-07-18 · 6 obs

○ 2026-07-16 18:46:06
● 2026-07-16 21:04:38
○ 2026-07-17 02:27:18
● 2026-07-18 21:23:12
○ 2026-07-19 10:00:46
○ 2026-07-24 14:59:08

○A18.64.155.1012026-06-24 → 2026-06-29 · 8 obs

○ 2017-01-09 15:45:06
● 2026-06-24 06:31:14
○ 2026-06-25 02:12:20
● 2026-06-25 05:15:26
○ 2026-06-26 19:30:42
● 2026-06-29 11:05:02
○ 2026-06-30 11:36:00
○ 2026-07-24 14:59:08

○A18.64.155.322026-06-24 → 2026-06-29 · 8 obs

○ 2017-01-09 15:45:06
● 2026-06-24 06:31:14
○ 2026-06-25 02:12:20
● 2026-06-25 05:15:26
○ 2026-06-26 19:30:42
● 2026-06-29 11:05:02
○ 2026-06-30 11:36:00
○ 2026-07-24 14:59:08

○A18.64.155.352026-06-24 → 2026-06-29 · 8 obs

○ 2017-01-09 15:45:06
● 2026-06-24 06:31:14
○ 2026-06-25 02:12:20
● 2026-06-25 05:15:26
○ 2026-06-26 19:30:42
● 2026-06-29 11:05:02
○ 2026-06-30 11:36:00
○ 2026-07-24 14:59:08

○A18.64.155.492026-06-24 → 2026-06-29 · 8 obs

○ 2017-01-09 15:45:06
● 2026-06-24 06:31:14
○ 2026-06-25 02:12:20
● 2026-06-25 05:15:26
○ 2026-06-26 19:30:42
● 2026-06-29 11:05:02
○ 2026-06-30 11:36:00
○ 2026-07-24 14:59:08

○A3.171.38.1062026-06-29 → 2026-06-29 · 4 obs

○ 2026-06-28 17:27:42
● 2026-06-29 08:29:00
○ 2026-06-29 11:05:02
○ 2026-07-24 14:59:08

○A3.171.38.612026-06-29 → 2026-06-29 · 4 obs

○ 2026-06-28 17:27:42
● 2026-06-29 08:29:00
○ 2026-06-29 11:05:02
○ 2026-07-24 14:59:08

○A3.171.38.92026-06-29 → 2026-06-29 · 4 obs

○ 2026-06-28 17:27:42
● 2026-06-29 08:29:00
○ 2026-06-29 11:05:02
○ 2026-07-24 14:59:08

○A3.171.38.972026-06-29 → 2026-06-29 · 4 obs

○ 2026-06-28 17:27:42
● 2026-06-29 08:29:00
○ 2026-06-29 11:05:02
○ 2026-07-24 14:59:08

○A52.203.226.2302017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:45:06
○ 2026-06-24 06:31:14
○ 2026-07-24 14:59:08

○A52.86.179.172017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:45:06
○ 2026-06-24 06:31:14
○ 2026-07-24 14:59:08

○A54.210.175.2512017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:45:06
○ 2026-06-24 06:31:14
○ 2026-07-24 14:59:08

○A54.230.79.1112026-06-27 → 2026-06-28 · 6 obs

○ 2026-06-26 22:38:06
● 2026-06-27 08:08:12
○ 2026-06-27 14:10:44
● 2026-06-28 12:12:48
○ 2026-06-28 16:45:00
○ 2026-07-24 14:59:08

○A54.230.79.222026-06-27 → 2026-06-28 · 6 obs

○ 2026-06-26 22:38:06
● 2026-06-27 08:08:12
○ 2026-06-27 14:10:44
● 2026-06-28 12:12:48
○ 2026-06-28 16:45:00
○ 2026-07-24 14:59:08

○A54.230.79.352026-06-27 → 2026-06-28 · 6 obs

○ 2026-06-26 22:38:06
● 2026-06-27 08:08:12
○ 2026-06-27 14:10:44
● 2026-06-28 12:12:48
○ 2026-06-28 16:45:00
○ 2026-07-24 14:59:08

○A54.230.79.822026-06-27 → 2026-06-28 · 6 obs

○ 2026-06-26 22:38:06
● 2026-06-27 08:08:12
○ 2026-06-27 14:10:44
● 2026-06-28 12:12:48
○ 2026-06-28 16:45:00
○ 2026-07-24 14:59:08

○A99.84.41.1012026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-20 20:34:20
● 2026-07-20 21:29:44
○ 2026-07-22 02:34:42
○ 2026-07-24 14:59:08

○A99.84.41.152026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-20 20:34:20
● 2026-07-20 21:29:44
○ 2026-07-22 02:34:42
○ 2026-07-24 14:59:08

○A99.84.41.362026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-20 20:34:20
● 2026-07-20 21:29:44
○ 2026-07-22 02:34:42
○ 2026-07-24 14:59:08

○A99.84.41.722026-07-20 → 2026-07-20 · 4 obs

○ 2026-07-20 20:34:20
● 2026-07-20 21:29:44
○ 2026-07-22 02:34:42
○ 2026-07-24 14:59:08

○A99.86.12.1292026-06-25 → 2026-06-30 · 12 obs

○ 2026-06-24 06:31:14
● 2026-06-25 02:12:20
○ 2026-06-25 05:15:26
● 2026-06-26 22:38:06
○ 2026-06-27 08:08:12
● 2026-06-27 14:10:44
○ 2026-06-28 12:12:48
● 2026-06-28 17:27:42
○ 2026-06-29 08:29:00
● 2026-06-30 11:36:00
○ 2026-07-01 01:27:44
○ 2026-07-24 14:59:08

○A99.86.12.22026-06-25 → 2026-06-30 · 12 obs

○A99.86.12.202026-06-25 → 2026-06-30 · 12 obs

○A99.86.12.882026-06-25 → 2026-06-30 · 12 obs

○CNAMEcluster8-1438017108.us-east-1.elb.amazonaws.com2017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:45:06
○ 2026-06-24 06:31:14
○ 2026-07-24 14:59:08

○CNAMEcluster8.instructure.com2017-01-09 → 2017-01-09 · 3 obs

● 2017-01-09 15:45:06
○ 2026-06-24 06:31:14
○ 2026-07-24 14:59:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, h.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: 538ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.35.107.49, 13.35.107.66...`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

rcs.instructure.com points to the four IP addresses 13.35.107.30, 13.35.107.49, 13.35.107.54 and 13.35.107.66.

Among the host names that share IP numbers with rcs.instructure.com are d2n3h37nndukbr.cloudfront.net, cbase.jp, faketown.com and two others.