kr.bt4g.com - robtex.com

kr.bt4g.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:39b6🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:a548🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.57.182Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.165.72🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.57.182, 172.67.165.72
IPv6 hints2606:4700:3031::6815:39b6, 2606:4700:3032::ac43:a548
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com

bt4g.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:39b6🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:a548🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.57.182Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.165.72🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSerin.ns.cloudflare.com ⭐
NSjake.ns.cloudflare.com
MXmx.yandex.net ⭐
TXTv=spf1 redirect=_spf.yandex.net
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.57.182, 172.67.165.72
IPv6 hints2606:4700:3031::6815:39b6, 2606:4700:3032::ac43:a548
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com
SOAerin.ns.cloudflare.comdns@cloudflare.com serial=2411148449
📈 Tranco rank: #13,418

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DNS History

6 records (4 active, 2 former)

A104.21.57.182172.67.165.722606:4700:3031::6815:39b62606:4700:3032::ac43:a5482606:4700:3034::6815:39b62606:4700:3037::ac43:a548
●A104.21.57.1822026-04-12 → 2026-08-04 · 2 obs
● 2026-04-12 19:33:50
● 2026-08-04 22:28:12
●A172.67.165.722026-04-12 → 2026-08-04 · 2 obs
● 2026-04-12 19:33:50
● 2026-08-04 22:28:12
●A2606:4700:3031::6815:39b62026-07-08 → 2026-08-04 · 3 obs
○ 2026-04-12 19:33:50
● 2026-07-08 10:28:20
● 2026-08-04 22:28:12
●A2606:4700:3032::ac43:a5482026-07-08 → 2026-08-04 · 3 obs
○ 2026-04-12 19:33:50
● 2026-07-08 10:28:20
● 2026-08-04 22:28:12
○A2606:4700:3034::6815:39b62026-04-12 → 2026-04-12 · 3 obs
● 2026-04-12 19:33:50
○ 2026-07-08 10:28:20
○ 2026-08-04 22:28:12
○A2606:4700:3037::ac43:a5482026-04-12 → 2026-04-12 · 3 obs
● 2026-04-12 19:33:50
○ 2026-07-08 10:28:20
○ 2026-08-04 22:28:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
bt4g.comerin.ns.cloudflare.com, jake.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.122

NS records: erin.ns.cloudflare.com, jake.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bt4g.com (unsigned zone)

⏱️ Timing

Total: 125ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.57.182, 172.67.165.72
AAAA22606:4700:3032::ac43:a548, 2606:4700:3031::6815:39b6
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

kr.bt4g.com directs to four IP numbers, which are 104.21.57.182, 172.67.165.72, 2606:4700:3031::6815:39b6 and 2606:4700:3032::ac43:a548.

extranet.gyb.ch, learnfast.blog, sf450.top and two other host names share IP numbers with kr.bt4g.com.