cdn.postbacksapp.com - robtex.com

cdn.postbacksapp.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:2c89🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c895🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.44.137Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.149🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.44.137, 172.67.200.149
IPv6 hints2606:4700:3031::6815:2c89, 2606:4700:3037::ac43:c895
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=16, name=cloudflare-ech.com

postbacksapp.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:2c89🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c895🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.44.137Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.149🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjohn.ns.cloudflare.com ⭐
NSmelany.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.44.137, 172.67.200.149
IPv6 hints2606:4700:3031::6815:2c89, 2606:4700:3037::ac43:c895
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=16, name=cloudflare-ech.com
SOAjohn.ns.cloudflare.comdns@cloudflare.com serial=2409557897
📈 Tranco rank: #438,402

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DNS History

6 records (4 active, 2 former)

A104.21.44.137172.67.200.1492606:4700:3031::6815:2c892606:4700:3037::ac43:c8952606:4700:3032::6815:2c892606:4700:3036::ac43:c895
●A104.21.44.1372026-05-17 → 2026-08-03 · 2 obs
● 2026-05-17 06:10:14
● 2026-08-03 06:40:00
●A172.67.200.1492026-05-17 → 2026-08-03 · 2 obs
● 2026-05-17 06:10:14
● 2026-08-03 06:40:00
●A2606:4700:3031::6815:2c892026-08-03 → 2026-08-03 · 2 obs
○ 2026-05-17 06:10:14
● 2026-08-03 06:40:00
○A2606:4700:3032::6815:2c892026-05-17 → 2026-05-17 · 2 obs
● 2026-05-17 06:10:14
○ 2026-08-03 06:40:00
○A2606:4700:3036::ac43:c8952026-05-17 → 2026-05-17 · 2 obs
● 2026-05-17 06:10:14
○ 2026-08-03 06:40:00
●A2606:4700:3037::ac43:c8952026-08-03 → 2026-08-03 · 2 obs
○ 2026-05-17 06:10:14
● 2026-08-03 06:40:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, g.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net...-
postbacksapp.comjohn.ns.cloudflare.com, melany.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.138

NS records: john.ns.cloudflare.com, melany.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postbacksapp.com (unsigned zone)

⏱️ Timing

Total: 199ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.44.137, 172.67.200.149
AAAA22606:4700:3037::ac43:c895, 2606:4700:3031::6815:2c89
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cdn.postbacksapp.com resolves to four IP addresses: 104.21.44.137, 172.67.200.149, 2606:4700:3031::6815:2c89 and 2606:4700:3037::ac43:c895.

www.peterhillier.co.uk, bsz.co.uk, 101games.io and two other host names share IP numbers with cdn.postbacksapp.com.