www.firstclassdschool.com - robtex.com

www.firstclassdschool.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:5d85🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:d22f🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.93.133Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.210.47🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.93.133, 172.67.210.47
IPv6 hints2606:4700:3033::6815:5d85, 2606:4700:3034::ac43:d22f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=183, name=cloudflare-ech.com

firstclassdschool.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:5d85🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:d22f🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.93.133Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.210.47🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlars.ns.cloudflare.com ⭐
NSliberty.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.93.133, 172.67.210.47
IPv6 hints2606:4700:3033::6815:5d85, 2606:4700:3034::ac43:d22f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=183, name=cloudflare-ech.com
SOAlars.ns.cloudflare.comdns@cloudflare.com serial=2399341885

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DNS History

9 records (4 active, 5 former)

20192020202120222023202420252026A104.21.93.133172.67.210.472606:4700:3033::6815:5d852606:4700:3034::ac43:d22f188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::CNAMEfirstclassdschool.com
●A104.21.93.1332026-02-23 → 2026-05-11 · 6 obs
● 2026-02-23 08:23:22
● 2026-03-03 00:09:06
○ 2026-03-03 18:10:24
○ 2026-03-10 04:04:18
● 2026-05-01 18:11:22
● 2026-05-11 21:24:24
●A172.67.210.472026-02-23 → 2026-05-11 · 6 obs
● 2026-02-23 08:23:22
● 2026-03-03 00:09:06
○ 2026-03-03 18:10:24
○ 2026-03-10 04:04:18
● 2026-05-01 18:11:22
● 2026-05-11 21:24:24
○A188.114.96.02026-03-03 → 2026-03-10 · 5 obs
○ 2026-03-03 00:09:06
● 2026-03-03 18:10:24
● 2026-03-10 04:04:18
○ 2026-05-01 18:11:22
○ 2026-05-11 21:24:24
○A188.114.97.02026-03-03 → 2026-03-10 · 5 obs
○ 2026-03-03 00:09:06
● 2026-03-03 18:10:24
● 2026-03-10 04:04:18
○ 2026-05-01 18:11:22
○ 2026-05-11 21:24:24
●A2606:4700:3033::6815:5d852026-02-23 → 2026-05-11 · 6 obs
● 2026-02-23 08:23:22
● 2026-03-03 00:09:06
○ 2026-03-03 18:10:24
○ 2026-03-10 04:04:18
● 2026-05-01 18:11:22
● 2026-05-11 21:24:24
●A2606:4700:3034::ac43:d22f2026-02-23 → 2026-05-11 · 6 obs
● 2026-02-23 08:23:22
● 2026-03-03 00:09:06
○ 2026-03-03 18:10:24
○ 2026-03-10 04:04:18
● 2026-05-01 18:11:22
● 2026-05-11 21:24:24
○A2a06:98c1:3120::2026-03-03 → 2026-03-10 · 5 obs
○ 2026-03-03 00:09:06
● 2026-03-03 18:10:24
● 2026-03-10 04:04:18
○ 2026-05-01 18:11:22
○ 2026-05-11 21:24:24
○A2a06:98c1:3121::2026-03-03 → 2026-03-10 · 5 obs
○ 2026-03-03 00:09:06
● 2026-03-03 18:10:24
● 2026-03-10 04:04:18
○ 2026-05-01 18:11:22
○ 2026-05-11 21:24:24
○CNAMEfirstclassdschool.com2018-06-24 → 2018-06-24 · 3 obs
● 2018-06-24 11:53:36
○ 2026-02-23 08:23:22
○ 2026-05-11 21:24:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
firstclassdschool.comlars.ns.cloudflare.com, liberty.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.240

NS records: lars.ns.cloudflare.com, liberty.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclassdschool.com (unsigned zone)

⏱️ Timing

Total: 133ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.210.47, 104.21.93.133
AAAA22606:4700:3033::6815:5d85, 2606:4700:3034::ac43:d22f
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (lars.ns.cloudflare.com, lars.ns.cloudflare.com, lars.ns.cloudflare.com...)

Analysis

IP Addresses

Four IP numbers are pointed to by www.firstclassdschool.com: 2606:4700:3033::6815:5d85, 2606:4700:3034::ac43:d22f, 104.21.93.133 and 172.67.210.47.

other host names including onemusic.tv, www.lolyland.cc, youuteb.com, 7tzw.com and gangya.net share IP numbers with www.firstclassdschool.com.