instructure.top - robtex.com

instructure.top

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:3314🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:da79🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.51.20Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.218.121🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSemerson.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c60🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerson.ns.cloudflare.com
A2803:f800:50::6ca2:c360🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRemerson.ns.cloudflare.com
A2a06:98c1:50::ac40:2360🇺🇸 Cloudflare2a06:98c1:50::/45
PTRemerson.ns.cloudflare.com
A108.162.195.96🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerson.ns.cloudflare.com
A162.159.44.96Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerson.ns.cloudflare.com
A172.64.35.96🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerson.ns.cloudflare.com
NSmelissa.ns.cloudflare.com
A2606:4700:50::adf5:3ac7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmelissa.ns.cloudflare.com
A2803:f800:50::6ca2:c0c7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmelissa.ns.cloudflare.com
A2a06:98c1:50::ac40:20c7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmelissa.ns.cloudflare.com
A108.162.192.199🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmelissa.ns.cloudflare.com
A172.64.32.199🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmelissa.ns.cloudflare.com
A173.245.58.199🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmelissa.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.51.20, 172.67.218.121
IPv6 hints2606:4700:3033::6815:3314, 2606:4700:3036::ac43:da79
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=105, name=cloudflare-ech.com
SOAemerson.ns.cloudflare.comdns@cloudflare.com serial=2398671967

top

DNSSEC🔒 Signed (DS record present)
NSa.zdnscloud.com ⭐
NSa.zdnscloud.cn
NSb.zdnscloud.cn
NSc.zdnscloud.com
NSd.zdnscloud.com
NSe.zdnscloud.cn
NSf.zdnscloud.cn
NSi.zdnscloud.cn
NSj.zdnscloud.com
TXT2026-04-26_13:35:01
SOAa.zdnscloud.comtd_dns_gtld@knet.cn serial=1395644227

Same first word

instructure.com
instructure.de
instructure.nl
instructure.onl
instructure.com.de
instructure.com.au
instructure.net
instructure.cm
instructure.org
instructure.site
instructure.education
instructure.github.io
instructure.workers.dev
instructure.design
instructure.cn
instructure.ca
instructure.top

Similar names

instructrue.com
intruscture.com
instructuer.com
instrutcure.com
instructeur.nl
intsructure.com
insrtucture.com
instructeur.com
insturcutre.com
insturcture.com
instructeur.be
instrucutre.com
instrcuture.com
isntructure.com

DNS History

12 records (6 active, 6 former)

201820192020202120222023202420252026NSemerson.ns.cloudflare.commelissa.ns.cloudflare.comalgin.ns.cloudflare.comsima.ns.cloudflare.comA104.21.51.20172.67.218.1212606:4700:3033::6815:33142606:4700:3036::ac43:da79104.18.42.75104.18.43.752400:cb00:2048:1::6812:2a4b2400:cb00:2048:1::6812:2b4b
○NSalgin.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
●NSemerson.ns.cloudflare.com2026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08
●NSmelissa.ns.cloudflare.com2026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08
○NSsima.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
○A104.18.42.752017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
○A104.18.43.752017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
●A104.21.51.202026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08
●A172.67.218.1212026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08
○A2400:cb00:2048:1::6812:2a4b2017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
○A2400:cb00:2048:1::6812:2b4b2017-03-16 → 2017-03-16 · 3 obs
● 2017-03-16 16:46:46
○ 2026-04-25 11:00:48
○ 2026-04-26 06:04:08
●A2606:4700:3033::6815:33142026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08
●A2606:4700:3036::ac43:da792026-04-25 → 2026-04-26 · 3 obs
○ 2017-03-16 16:46:46
● 2026-04-25 11:00:48
● 2026-04-26 06:04:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
topa.zdnscloud.cn, b.zdnscloud.cn, c.zdnscloud.com, d.zdnscloud.com...-
instructure.topemerson.ns.cloudflare.com, melissa.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.199

NS records: emerson.ns.cloudflare.com, melissa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructure.top (unsigned zone)

⏱️ Timing

Total: 240ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.218.121, 104.21.51.20
AAAA22606:4700:3036::ac43:da79, 2606:4700:3033::6815:3314
NS2emerson.ns.cloudflare.com, melissa.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1emerson.ns.cloudflare.com dns.cloudflare

Analysis

IP Addresses

instructure.top resolves to four IP numbers: 2606:4700:3033::6815:3314, 2606:4700:3036::ac43:da79, 104.21.51.20 and 172.67.218.121.

other host names for instance thetechpanda.com, breatheilo.com, ns1.webbersky.com, unicitycorporation.com and cc711.com share IP numbers with instructure.top.

Name Servers

instructure.top is delegated to two name servers: emerson.ns.cloudflare.com and melissa.ns.cloudflare.com.

instructure.top shares the same name server setup as other domains, for example modernoutdoorlife.com, etec1020.com, turyst.com.ua, raw.re and ancitus.com.

instructure.top at least partially shares name servers with other domains, for instance aw-ad.com, euclinicalrisk.com, vcontract.top, accessingnotionservices.com and jtrack.ca.

These name servers are commonly used with the name servers nia.ns.cloudflare.com.

Host names with six IP numbers:

emerson.ns.cloudflare.com points to: 2606:4700:58::a29f:2c60, 2803:f800:50::6ca2:c360, 2a06:98c1:50::ac40:2360, 108.162.195.96, 162.159.44.96 and 172.64.35.96; melissa.ns.cloudflare.com points to: 2606:4700:50::adf5:3ac7, 2803:f800:50::6ca2:c0c7, 2a06:98c1:50::ac40:20c7, 108.162.192.199, 172.64.32.199 and 173.245.58.199.