mail.doubletopcb.com - robtex.com

mail.doubletopcb.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:ccc9🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:2537🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.37.55Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.204.201🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.37.55, 172.67.204.201
IPv6 hints2606:4700:3031::ac43:ccc9, 2606:4700:3037::6815:2537
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=151, name=cloudflare-ech.com

doubletopcb.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:ccc9🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:2537🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.37.55Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.204.201🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSaaron.ns.cloudflare.com ⭐
NSlia.ns.cloudflare.com
MX_dc-mx.303a5e76b8ab.doubletopcb.com ⭐
TXTv=spf1 a mx ptr include:bluehost.com ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.37.55, 172.67.204.201
IPv6 hints2606:4700:3031::ac43:ccc9, 2606:4700:3037::6815:2537
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=151, name=cloudflare-ech.com
SOAaaron.ns.cloudflare.comdns@cloudflare.com serial=2398459547

Previously MX for

doubletopcb.com

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DNS History

5 records (4 active, 1 former)

201820192020202120222023202420252026A104.21.37.55172.67.204.2012606:4700:3031::ac43:ccc92606:4700:3037::6815:253769.89.20.52
●A104.21.37.552026-04-12 → 2026-04-12 · 2 obs
○ 2017-09-03 22:35:06
● 2026-04-12 21:16:08
●A172.67.204.2012026-04-12 → 2026-04-12 · 2 obs
○ 2017-09-03 22:35:06
● 2026-04-12 21:16:08
●A2606:4700:3031::ac43:ccc92026-04-12 → 2026-04-12 · 2 obs
○ 2017-09-03 22:35:06
● 2026-04-12 21:16:08
●A2606:4700:3037::6815:25372026-04-12 → 2026-04-12 · 2 obs
○ 2017-09-03 22:35:06
● 2026-04-12 21:16:08
○A69.89.20.522017-09-03 → 2017-09-03 · 2 obs
● 2017-09-03 22:35:06
○ 2026-04-12 21:16:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, b.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net...-
doubletopcb.comlia.ns.cloudflare.com, aaron.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.150

NS records: lia.ns.cloudflare.com, aaron.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doubletopcb.com (unsigned zone)

⏱️ Timing

Total: 175ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.204.201, 104.21.37.55
AAAA22606:4700:3031::ac43:ccc9, 2606:4700:3037::6815:2537
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.doubletopcb.com resolves to four IP numbers: 2606:4700:3031::ac43:ccc9, 2606:4700:3037::6815:2537, 104.21.37.55 and 172.67.204.201.

Other host names such as mart.supema.sa.com, ts-el.com, albaladcomores.com, www.ychengqygl.com and domovoy.net share IPs with mail.doubletopcb.com.