instructures.org - dns.ninja

`instructures.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:43fd^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:b78f^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.67.253^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.183.143^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`carl.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`carl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`carl.ns.cloudflare.com`
		A	108.162.193.106^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carl.ns.cloudflare.com`
		A	172.64.33.106^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carl.ns.cloudflare.com`
		A	173.245.59.106^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carl.ns.cloudflare.com`
NS	`lia.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lia.ns.cloudflare.com`
		A	108.162.192.185^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	172.64.32.185^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
		A	173.245.58.185^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lia.ns.cloudflare.com`
MX	`mxa.mailgun.org` ⭐
		A	34.36.182.139^{🇺🇸 Google34.32.0.0/11}
			PTR	`139.182.36.34.bc.googleusercontent.com`
MX	`mxb.mailgun.org` ⭐
		A	34.149.254.5^{🇺🇸 Google34.148.0.0/14}
			PTR	`5.254.149.34.bc.googleusercontent.com`
TXT	`v=spf1 include:mailgun.org ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.67.253, 172.67.183.143
		IPv6 hints	2606:4700:3035::6815:43fd, 2606:4700:3035::ac43:b78f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=53, name=cloudflare-ech.com
SOA	`carl.ns.cloudflare.com`dns@cloudflare.com serial=2406405725

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1785524216

Same first word

instructures.org

Similar names

sinstructure.com

insstructure.com

instructsure.com

DNS History

27 records (8 active, 19 former)

●NScarl.ns.cloudflare.com2026-02-15 → 2026-07-31 · 3 obs

○ 2018-09-28 22:17:36
● 2026-02-15 13:24:30
● 2026-07-31 19:19:10

●NSlia.ns.cloudflare.com2026-02-15 → 2026-07-31 · 3 obs

○ 2018-09-28 22:17:36
● 2026-02-15 13:24:30
● 2026-07-31 19:19:10

○NSns-1304.awsdns-35.org2018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○NSns-1747.awsdns-26.co.uk2018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○NSns-401.awsdns-50.com2018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○NSns-634.awsdns-15.net2018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

●MXmxa.mailgun.org2018-09-28 → 2026-07-31 · 2 obs

● 2018-09-28 22:17:36
● 2026-07-31 19:19:10

●MXmxb.mailgun.org2018-09-28 → 2026-07-31 · 2 obs

● 2018-09-28 22:17:36
● 2026-07-31 19:19:10

●A104.21.67.2532026-02-15 → 2026-07-31 · 10 obs

○ 2018-09-28 22:17:36
● 2026-02-15 13:24:30
● 2026-05-27 07:08:16
○ 2026-05-30 06:43:04
● 2026-06-02 17:29:40
○ 2026-07-14 16:09:52
● 2026-07-17 05:31:18
○ 2026-07-23 01:38:30
● 2026-07-28 11:30:50
● 2026-07-31 19:19:10

●A172.67.183.1432026-02-15 → 2026-07-31 · 10 obs

○A188.114.96.02026-05-30 → 2026-07-23 · 8 obs

○ 2026-05-27 07:08:16
● 2026-05-30 06:43:04
○ 2026-06-02 17:29:40
● 2026-07-14 16:09:52
○ 2026-07-17 05:31:18
● 2026-07-23 01:38:30
○ 2026-07-28 11:30:50
○ 2026-07-31 19:19:10

○A188.114.97.02026-05-30 → 2026-07-23 · 8 obs

○ 2026-05-27 07:08:16
● 2026-05-30 06:43:04
○ 2026-06-02 17:29:40
● 2026-07-14 16:09:52
○ 2026-07-17 05:31:18
● 2026-07-23 01:38:30
○ 2026-07-28 11:30:50
○ 2026-07-31 19:19:10

○A2606:4700:3030::6815:43fd2026-02-15 → 2026-06-16 · 8 obs

○ 2018-09-28 22:17:36
● 2026-02-15 13:24:30
● 2026-05-27 07:08:16
○ 2026-05-30 06:43:04
● 2026-06-02 17:29:40
● 2026-06-16 12:18:04
○ 2026-07-13 10:38:02
○ 2026-07-31 19:19:10

○A2606:4700:3033::ac43:b78f2026-02-15 → 2026-06-16 · 8 obs

○ 2018-09-28 22:17:36
● 2026-02-15 13:24:30
● 2026-05-27 07:08:16
○ 2026-05-30 06:43:04
● 2026-06-02 17:29:40
● 2026-06-16 12:18:04
○ 2026-07-13 10:38:02
○ 2026-07-31 19:19:10

●A2606:4700:3035::6815:43fd2026-07-13 → 2026-07-31 · 7 obs

○ 2026-06-16 12:18:04
● 2026-07-13 10:38:02
○ 2026-07-14 16:09:52
● 2026-07-17 05:31:18
○ 2026-07-23 01:38:30
● 2026-07-28 11:30:50
● 2026-07-31 19:19:10

●A2606:4700:3035::ac43:b78f2026-07-13 → 2026-07-31 · 7 obs

○ 2026-06-16 12:18:04
● 2026-07-13 10:38:02
○ 2026-07-14 16:09:52
● 2026-07-17 05:31:18
○ 2026-07-23 01:38:30
● 2026-07-28 11:30:50
● 2026-07-31 19:19:10

○A2a06:98c1:3120::2026-05-30 → 2026-07-23 · 8 obs

○ 2026-05-27 07:08:16
● 2026-05-30 06:43:04
○ 2026-06-02 17:29:40
● 2026-07-14 16:09:52
○ 2026-07-17 05:31:18
● 2026-07-23 01:38:30
○ 2026-07-28 11:30:50
○ 2026-07-31 19:19:10

○A2a06:98c1:3121::2026-05-30 → 2026-07-23 · 8 obs

○ 2026-05-27 07:08:16
● 2026-05-30 06:43:04
○ 2026-06-02 17:29:40
● 2026-07-14 16:09:52
○ 2026-07-17 05:31:18
● 2026-07-23 01:38:30
○ 2026-07-28 11:30:50
○ 2026-07-31 19:19:10

○A52.216.1.2342018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.104.422018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.105.2502018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.106.182018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.161.1622018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.21.1542018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.226.662018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.84.1542018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

○A52.216.98.2262018-09-28 → 2018-09-28 · 3 obs

● 2018-09-28 22:17:36
○ 2026-02-15 13:24:30
○ 2026-07-31 19:19:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
instructures.org	carl.ns.cloudflare.com, lia.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.106

NS records: carl.ns.cloudflare.com, lia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructures.org (unsigned zone)

⏱️ Timing

Total: 517ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.67.253, 172.67.183.143`
AAAA	2	`2606:4700:3035::ac43:b78f, 2606:4700:3035::6815:43fd`
NS	2	`carl.ns.cloudflare.com, lia.ns.cloudflare.com`
MX	2	`mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10)`
TXT	1	`v=spf1 include:mailgun.org ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`carl.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

instructures.org has four IP addresses: 104.21.67.253, 172.67.183.143, 2606:4700:3035::6815:43fd and 2606:4700:3035::ac43:b78f.

www.kolotmanagement.com, kyfhb.com, 3(0x7868616d73746572).com and two other host names share IP numbers with instructures.org.

Name Servers

instructures.org is delegated to two name servers: carl.ns.cloudflare.com and lia.ns.cloudflare.com.

instructures.org uses the same name servers as several other domains — among them airlinesofficemap.com, getmecodes.co.uk, 1xbet-appapkdownload.cfd and two more.

instructures.org shares at least some of its name servers with other domains, including countrywestmotel.com, shopform.de, nemaloknig.com and two others.

These name servers are frequently paired with the name servers quentin.ns.cloudflare.com, adi.ns.cloudflare.com and teagan.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

carl.ns.cloudflare.com resolves to 108.162.193.106, 172.64.33.106, 173.245.59.106 and 3 other IP addresses.

lia.ns.cloudflare.com resolves to 108.162.192.185, 172.64.32.185, 173.245.58.185 and 3 other IP addresses.

Mail Servers

Mail for instructures.org is handled by two mail servers — mxa.mailgun.org and mxb.mailgun.org.

instructures.org uses an identical mail server configuration to several other domains — among them nivision.net, intra-know.com, mailing.flirt-fever.de and two more.

instructures.org has at least partial mail server overlap with other domains such as windowcleaningresource.com, vostro.app, exceed.agency and two more.

These mail servers commonly appear together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two other mail servers.

mxa.mailgun.org and mxb.mailgun.org each resolve to one IP number: mxa.mailgun.org points to 34.36.182.139 and mxb.mailgun.org points to 34.149.254.5.