`forum.postcrossing.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:8e7e^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5f0b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.95.11^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.142.126^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
TXT	`v=spf1 include:postcrossing.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.95.11, 172.67.142.126
		IPv6 hints	2606:4700:3034::ac43:8e7e, 2606:4700:3036::6815:5f0b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=6, name=cloudflare-ech.com

`postcrossing.com`

	DNSSEC	⚠️ Not signed
	A	63.180.43.56^{🇺🇸 Amazon63.180.0.0/14 EC2 FRA Prefix}
	NS	`brett.ns.cloudflare.com` ⭐
	NS	`paris.ns.cloudflare.com`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`brave-ledger-verification=c3ee5582e649a7dd8102c1f133ff0c4439a970e401d1db4cf5a...`
	TXT	`mailru-verification: f000919f10121133`
	TXT	`v=spf1 a:customs.postcrossing.com a:postino.postcrossing.com a:mail-fallback....`
	SOA	`brett.ns.cloudflare.com`dns@cloudflare.com serial=2399881170

WOT: SAFE (84/100)
rank #48906 globally
rank #21633 in the tld
🔒 HSTS Preload (+subdomains)
WOT: SAFE (94/100)
📈 Tranco rank: #35,360

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DNS History

12 records (4 active, 8 former)

○MXalt1.aspmx.l.google.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXalt2.aspmx.l.google.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXaspmx.l.google.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXaspmx2.googlemail.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXaspmx3.googlemail.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXaspmx4.googlemail.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

○MXaspmx5.googlemail.com2015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

●A104.21.95.112026-03-22 → 2026-04-14 · 3 obs

○ 2016-07-24 21:04:40
● 2026-03-22 15:56:24
● 2026-04-14 05:22:30

●A172.67.142.1262026-03-22 → 2026-04-14 · 3 obs

○ 2016-07-24 21:04:40
● 2026-03-22 15:56:24
● 2026-04-14 05:22:30

○A178.79.142.2452015-08-06 → 2016-07-24 · 4 obs

● 2015-08-06 23:07:52
● 2016-07-24 21:04:40
○ 2026-03-22 15:56:24
○ 2026-04-14 05:22:30

●A2606:4700:3034::ac43:8e7e2026-03-22 → 2026-04-14 · 3 obs

○ 2016-07-24 21:04:40
● 2026-03-22 15:56:24
● 2026-04-14 05:22:30

●A2606:4700:3036::6815:5f0b2026-03-22 → 2026-04-14 · 3 obs

○ 2016-07-24 21:04:40
● 2026-03-22 15:56:24
● 2026-04-14 05:22:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
postcrossing.com	brett.ns.cloudflare.com, paris.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.113

NS records: brett.ns.cloudflare.com, paris.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postcrossing.com (unsigned zone)

⏱️ Timing

Total: 125ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.95.11, 172.67.142.126`
AAAA	2	`2606:4700:3034::ac43:8e7e, 2606:4700:3036::6815:5f0b`
TXT	1	`v=spf1 include:postcrossing.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

forum.postcrossing.com points to four IP numbers: 2606:4700:3034::ac43:8e7e, 2606:4700:3036::6815:5f0b, 104.21.95.11 and 172.67.142.126.

Other host names, for instance bitcoinbankbreaker.org, www.lonlutzmd.com, com.nocuffs.com, zailanglaaoyunpiaogangcanban.cfd and www.mzvuka.ru share IP numbers with forum.postcrossing.com.

forum.postcrossing.com - robtex.com