mail.cost911.com - robtex.com

mail.cost911.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:473b🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:a9fb🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.71.59Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.169.251🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.71.59, 172.67.169.251
IPv6 hints2606:4700:3031::6815:473b, 2606:4700:3033::ac43:a9fb
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com

cost911.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:473b🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:a9fb🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.71.59Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.169.251🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSneil.ns.cloudflare.com ⭐
NSnovalee.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.71.59, 172.67.169.251
IPv6 hints2606:4700:3031::6815:473b, 2606:4700:3033::ac43:a9fb
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOAneil.ns.cloudflare.comdns@cloudflare.com serial=2399305832

Previously MX for

cost911.com

Same first word

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DNS History

5 records (4 active, 1 former)

202120222023202420252026A104.21.71.59172.67.169.2512606:4700:3031::6815:473b2606:4700:3033::ac43:a9fb66.70.178.74
●A104.21.71.592026-04-12 → 2026-04-12 · 2 obs
○ 2020-02-29 21:40:12
● 2026-04-12 16:43:36
●A172.67.169.2512026-04-12 → 2026-04-12 · 2 obs
○ 2020-02-29 21:40:12
● 2026-04-12 16:43:36
●A2606:4700:3031::6815:473b2026-04-12 → 2026-04-12 · 2 obs
○ 2020-02-29 21:40:12
● 2026-04-12 16:43:36
●A2606:4700:3033::ac43:a9fb2026-04-12 → 2026-04-12 · 2 obs
○ 2020-02-29 21:40:12
● 2026-04-12 16:43:36
○A66.70.178.742020-02-29 → 2020-02-29 · 2 obs
● 2020-02-29 21:40:12
○ 2026-04-12 16:43:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...-
cost911.comneil.ns.cloudflare.com, novalee.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.182

NS records: neil.ns.cloudflare.com, novalee.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cost911.com (unsigned zone)

⏱️ Timing

Total: 84ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.71.59, 172.67.169.251
AAAA22606:4700:3033::ac43:a9fb, 2606:4700:3031::6815:473b
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.cost911.com resolves to four IPs: 2606:4700:3031::6815:473b, 2606:4700:3033::ac43:a9fb, 104.21.71.59 and 172.67.169.251.

Other host names such as sproch.me, ninj4.net, 2e746c830606ccfaa3b9.xyz, aprilburton.top and a1zahlung.cfd share IP numbers with mail.cost911.com.