mail.castleisp.com - robtex.com

mail.castleisp.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:1de2🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:95db🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.29.226Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.149.219🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.29.226, 172.67.149.219
IPv6 hints2606:4700:3033::6815:1de2, 2606:4700:3035::ac43:95db
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=210, name=cloudflare-ech.com

castleisp.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:1de2🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:95db🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.29.226Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.149.219🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSduke.ns.cloudflare.com ⭐
NSkara.ns.cloudflare.com
MXmail.pacinfo.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.29.226, 172.67.149.219
IPv6 hints2606:4700:3033::6815:1de2, 2606:4700:3035::ac43:95db
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=210, name=cloudflare-ech.com
SOAduke.ns.cloudflare.comdns@cloudflare.com serial=2410805895

Previously MX for

castleisp.com

Same first word

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mail.gl
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DNS History

7 records (4 active, 3 former)

20162017201820192020202120222023202420252026A104.21.29.226172.67.149.2192606:4700:3033::6815:1de22606:4700:3035::ac43:95db207.189.130.1342606:4700:3037::6815:1de22606:4700:3037::ac43:95db
●A104.21.29.2262026-02-16 → 2026-08-03 · 3 obs
○ 2016-08-19 10:54:48
● 2026-02-16 22:19:08
● 2026-08-03 13:53:36
●A172.67.149.2192026-02-16 → 2026-08-03 · 3 obs
○ 2016-08-19 10:54:48
● 2026-02-16 22:19:08
● 2026-08-03 13:53:36
○A207.189.130.1342015-05-30 → 2016-08-19 · 4 obs
● 2015-05-30 14:52:40
● 2016-08-19 10:54:48
○ 2026-02-16 22:19:08
○ 2026-08-03 13:53:36
●A2606:4700:3033::6815:1de22026-08-03 → 2026-08-03 · 2 obs
○ 2026-05-22 18:32:00
● 2026-08-03 13:53:36
●A2606:4700:3035::ac43:95db2026-08-03 → 2026-08-03 · 2 obs
○ 2026-05-22 18:32:00
● 2026-08-03 13:53:36
○A2606:4700:3037::6815:1de22026-02-16 → 2026-05-22 · 4 obs
○ 2016-08-19 10:54:48
● 2026-02-16 22:19:08
● 2026-05-22 18:32:00
○ 2026-08-03 13:53:36
○A2606:4700:3037::ac43:95db2026-02-16 → 2026-05-22 · 4 obs
○ 2016-08-19 10:54:48
● 2026-02-16 22:19:08
● 2026-05-22 18:32:00
○ 2026-08-03 13:53:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
castleisp.comduke.ns.cloudflare.com, kara.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.110

NS records: duke.ns.cloudflare.com, kara.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for castleisp.com (unsigned zone)

⏱️ Timing

Total: 97ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.149.219, 104.21.29.226
AAAA22606:4700:3035::ac43:95db, 2606:4700:3033::6815:1de2
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.castleisp.com resolves to four IP addresses: 104.21.29.226, 172.67.149.219, 2606:4700:3033::6815:1de2 and 2606:4700:3035::ac43:95db.

Additional host names — spirtleflow.digital, topanbet77.org, lumiup.com and two others — share IP numbers with mail.castleisp.com.