classlink.renzullilearning.com - robtex.com
classlink.renzullilearning.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:ac68🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:37bd🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.55.189Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.172.104🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.55.189, 172.67.172.104 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:ac68, 2606:4700:3033::6815:37bd | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com | ||||||
renzullilearning.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:ac68🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:37bd🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.55.189Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.172.104🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | kai.ns.cloudflare.com ⭐ | ||||||
| NS | serena.ns.cloudflare.com | ||||||
| MX | renzullilearning-com.mail.protection.outlook.com ⭐ | ||||||
| TXT | MS=ms27816720 | ||||||
| TXT | google-site-verification=5ChFyTIzkon37K3fgM64CSKAKu0r00yKF4gZqJ6vKFI | ||||||
| TXT | google-site-verification=Q70uXYdxkl3PysfOXao9zKh_2xWrU8qPWB6l6DMtFCY | ||||||
| TXT | v=spf1 include:spf.protection.outlook.com include:40100543.spf02.hubspotemail... | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.55.189, 172.67.172.104 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:ac68, 2606:4700:3033::6815:37bd | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com | ||||||
| SOA | kai.ns.cloudflare.comdns@cloudflare.com serial=2403563734 | ||||||
WOT: SAFE (76/100)
Same first word
classlink.com |
classlink.com.cn |
classlink.us |
classlink.com.de |
classlink.ru |
classlink.net |
classlink.org |
classlink.me |
classlink.tech |
classlink.io |
classlink.de |
Similar names
linkclass.com |
scanskill.com |
classlikn.com |
linkclass.co.uk |
killsancs.com |
cnaskills.com |
skillscan.com |
linkclass.com.cn |
linkclass.org |
DNS History
9 records (4 active, 5 former)
●A104.21.55.1892026-05-08 → 2026-05-11 · 3 obs
○ 2019-12-19 05:01:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
●A172.67.172.1042026-05-08 → 2026-05-11 · 3 obs
○ 2019-12-19 05:01:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
○A188.114.96.02026-05-08 → 2026-05-11 · 2 obs
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
○ 2026-05-11 12:25:42
○A188.114.97.02026-05-08 → 2026-05-11 · 2 obs
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
○ 2026-05-11 12:25:42
●A2606:4700:3031::ac43:ac682026-05-08 → 2026-05-11 · 3 obs
○ 2019-12-19 05:01:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
●A2606:4700:3033::6815:37bd2026-05-08 → 2026-05-11 · 3 obs
○ 2019-12-19 05:01:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
● 2026-05-08 11:15:08
● 2026-05-11 12:25:42
○A2a06:98c1:3120::2026-05-08 → 2026-05-11 · 2 obs
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
○ 2026-05-11 12:25:42
○A2a06:98c1:3121::2026-05-08 → 2026-05-11 · 2 obs
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
○ 2026-05-11 12:25:42
○A52.129.116.2452019-12-19 → 2019-12-19 · 3 obs
● 2019-12-19 05:01:42
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
○ 2026-05-08 11:15:08
○ 2026-05-11 12:25:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net... | - |
| renzullilearning.com | kai.ns.cloudflare.com, serena.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.193.188
NS records: kai.ns.cloudflare.com, serena.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for renzullilearning.com (unsigned zone)
⏱️ Timing
Total: 374ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.172.104, 104.21.55.189 |
| AAAA | 2 | 2606:4700:3031::ac43:ac68, 2606:4700:3033::6815:37bd |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (kai.ns.cloudflare.com, kai.ns.cloudflare.com, kai.ns.cloudflare.com...)
Analysis
IP Addresses
Four IP numbers are pointed to by classlink.renzullilearning.com: 2606:4700:3031::ac43:ac68, 2606:4700:3033::6815:37bd, 104.21.55.189 and 172.67.172.104.
other host names including qeliovandora.com, fbsyoe.cn, frosgroup.com, bangchucai1.edu.vn and www.uzuruta.top share IP numbers with classlink.renzullilearning.com.