mail.cjb.kr - robtex.com

mail.cjb.kr

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b085πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3032::6815:1f7eπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.31.126Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.176.133πŸ‡ΊπŸ‡Έ Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.31.126, 172.67.176.133
IPv6 hints2606:4700:3031::ac43:b085, 2606:4700:3032::6815:1f7e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=242, name=cloudflare-ech.com

cjb.kr

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b085πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3032::6815:1f7eπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.31.126Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.176.133πŸ‡ΊπŸ‡Έ Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSirma.ns.cloudflare.com ⭐
NStitan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.31.126, 172.67.176.133
IPv6 hints2606:4700:3031::ac43:b085, 2606:4700:3032::6815:1f7e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=242, name=cloudflare-ech.com
SOAirma.ns.cloudflare.comdns@cloudflare.com serial=2407970981

Previously MX for

Same first word

Similar names

DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.31.126172.67.176.1332606:4700:3031::ac43:b0852606:4700:3032::6815:1f7e210.126.124.14
●A104.21.31.1262026-08-13 β†’ 2026-08-13 Β· 2 obs
β—‹ 2016-12-18 22:45:46
● 2026-08-13 13:38:52
●A172.67.176.1332026-08-13 β†’ 2026-08-13 Β· 2 obs
β—‹ 2016-12-18 22:45:46
● 2026-08-13 13:38:52
β—‹A210.126.124.142015-05-30 β†’ 2016-12-18 Β· 3 obs
● 2015-05-30 02:46:34
● 2016-12-18 22:45:46
β—‹ 2026-08-13 13:38:52
●A2606:4700:3031::ac43:b0852026-08-13 β†’ 2026-08-13 Β· 2 obs
β—‹ 2016-12-18 22:45:46
● 2026-08-13 13:38:52
●A2606:4700:3032::6815:1f7e2026-08-13 β†’ 2026-08-13 Β· 2 obs
β—‹ 2016-12-18 22:45:46
● 2026-08-13 13:38:52

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
krb.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...-
cjb.krtitan.ns.cloudflare.com, irma.ns.cloudflare.com-

βœ… Authoritative Response

Server:162.159.44.93

NS records: titan.ns.cloudflare.com, irma.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cjb.kr (unsigned zone)

⏱️ Timing

Total: 707ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.31.126, 172.67.176.133
AAAA22606:4700:3031::ac43:b085, 2606:4700:3032::6815:1f7e
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.cjb.kr has four IP addresses: 104.21.31.126, 172.67.176.133, 2606:4700:3031::ac43:b085 and 2606:4700:3032::6815:1f7e.

zzsanlian.com, relikaj.net, covidradar.org.br and two other host names share IP numbers with mail.cjb.kr.