mail.castan.us - robtex.com

mail.castan.us

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:3ffd🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:adb3🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.63.253Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.173.179🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.63.253, 172.67.173.179
IPv6 hints2606:4700:3034::6815:3ffd, 2606:4700:3036::ac43:adb3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=159, name=cloudflare-ech.com

castan.us

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:3ffd🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:adb3🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.63.253Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.173.179🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbeau.ns.cloudflare.com ⭐
NSemely.ns.cloudflare.com
MXroute3.mx.cloudflare.net ⭐
MXroute1.mx.cloudflare.net(84)
MXroute2.mx.cloudflare.net(88)
TXTNETORGFT9574461.onmicrosoft.com
TXTv=spf1 include:_spf.mx.cloudflare.net ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.63.253, 172.67.173.179
IPv6 hints2606:4700:3034::6815:3ffd, 2606:4700:3036::ac43:adb3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=159, name=cloudflare-ech.com
SOAbeau.ns.cloudflare.comdns@cloudflare.com serial=2400270898

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DNS History

16 records (4 active, 12 former)

20162017201820192020202120222023202420252026A104.21.63.253172.67.173.1792606:4700:3034::6815:3ffd2606:4700:3036::ac43:adb3173.201.192.199173.201.193.199188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::68.178.252.11568.178.252.22272.167.218.19297.74.135.111CNAMEpop.secureserver.netpop.where.secureserver.net
●A104.21.63.2532026-02-15 → 2026-05-11 · 6 obs
○ 2016-04-26 19:38:28
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-04-01 05:42:02
● 2026-05-08 11:08:18
● 2026-05-11 05:04:44
●A172.67.173.1792026-02-15 → 2026-05-11 · 6 obs
○ 2016-04-26 19:38:28
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-04-01 05:42:02
● 2026-05-08 11:08:18
● 2026-05-11 05:04:44
○A173.201.192.1992015-06-17 → 2015-06-17 · 3 obs
● 2015-06-17 10:36:56
○ 2026-02-15 04:18:06
○ 2026-05-11 05:04:44
○A173.201.193.1992015-06-17 → 2015-06-17 · 3 obs
● 2015-06-17 10:36:56
○ 2026-02-15 04:18:06
○ 2026-05-11 05:04:44
○A188.114.96.02026-03-25 → 2026-04-01 · 5 obs
○ 2026-02-15 04:18:06
● 2026-03-25 16:25:44
● 2026-04-01 05:42:02
○ 2026-05-08 11:08:18
○ 2026-05-11 05:04:44
○A188.114.97.02026-03-25 → 2026-04-01 · 5 obs
○ 2026-02-15 04:18:06
● 2026-03-25 16:25:44
● 2026-04-01 05:42:02
○ 2026-05-08 11:08:18
○ 2026-05-11 05:04:44
●A2606:4700:3034::6815:3ffd2026-02-15 → 2026-05-11 · 6 obs
○ 2016-04-26 19:38:28
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-04-01 05:42:02
● 2026-05-08 11:08:18
● 2026-05-11 05:04:44
●A2606:4700:3036::ac43:adb32026-02-15 → 2026-05-11 · 6 obs
○ 2016-04-26 19:38:28
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-04-01 05:42:02
● 2026-05-08 11:08:18
● 2026-05-11 05:04:44
○A2a06:98c1:3120::2026-03-25 → 2026-04-01 · 5 obs
○ 2026-02-15 04:18:06
● 2026-03-25 16:25:44
● 2026-04-01 05:42:02
○ 2026-05-08 11:08:18
○ 2026-05-11 05:04:44
○A2a06:98c1:3121::2026-03-25 → 2026-04-01 · 5 obs
○ 2026-02-15 04:18:06
● 2026-03-25 16:25:44
● 2026-04-01 05:42:02
○ 2026-05-08 11:08:18
○ 2026-05-11 05:04:44
○A68.178.252.1152015-06-17 → 2016-04-26 · 4 obs
● 2015-06-17 10:36:56
● 2016-04-26 19:38:28
○ 2026-02-15 04:18:06
○ 2026-05-11 05:04:44
○A68.178.252.2222015-06-17 → 2015-06-17 · 3 obs
● 2015-06-17 10:36:56
○ 2026-02-15 04:18:06
○ 2026-05-11 05:04:44
○A72.167.218.1922015-06-17 → 2015-06-17 · 3 obs
● 2015-06-17 10:36:56
○ 2026-02-15 04:18:06
○ 2026-05-11 05:04:44
○A97.74.135.1112015-10-30 → 2016-01-23 · 5 obs
○ 2015-06-17 10:36:56
● 2015-10-30 08:43:52
● 2016-01-23 14:43:24
○ 2016-04-26 19:38:28
○ 2026-05-11 05:04:44
○CNAMEpop.secureserver.net2015-06-17 → 2026-02-15 · 4 obs
● 2015-06-17 10:36:56
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-05-11 05:04:44
○CNAMEpop.where.secureserver.net2015-10-30 → 2026-02-15 · 5 obs
○ 2015-06-17 10:36:56
● 2015-10-30 08:43:52
● 2026-02-15 04:18:06
○ 2026-03-25 16:25:44
○ 2026-05-11 05:04:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usb.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us...-
castan.usemely.ns.cloudflare.com, beau.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.73

NS records: emely.ns.cloudflare.com, beau.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for castan.us (unsigned zone)

⏱️ Timing

Total: 241ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.173.179, 104.21.63.253
AAAA22606:4700:3034::6815:3ffd, 2606:4700:3036::ac43:adb3
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

Four IP numbers are pointed to by mail.castan.us: 2606:4700:3034::6815:3ffd, 2606:4700:3036::ac43:adb3, 104.21.63.253 and 172.67.173.179.

other host names including alkhaleej-jobs.net, www.whatsapfdp.com, gem88.me, bnrelief.shop and ebay.blog.theglammygrammy.com share IP numbers with mail.castan.us.