poscentrum.dk DNS records

🖥️ Nameservers2 records 64ms

Nameserver	IP addresses	PTR	ASN / ISP
summer.ns.cloudflare.com	108.162.194.9 162.159.38.9 172.64.34.9 2606:4700:50::a29f:2609 2803:f800:50::6ca2:c209 2a06:98c1:50::ac40:2209	summer.ns.cloudflare.com summer.ns.cloudflare.com summer.ns.cloudflare.com summer.ns.cloudflare.com summer.ns.cloudflare.com summer.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
yisroel.ns.cloudflare.com	108.162.195.185 162.159.44.185 172.64.35.185 2606:4700:58::a29f:2cb9 2803:f800:50::6ca2:c3b9 2a06:98c1:50::ac40:23b9	yisroel.ns.cloudflare.com yisroel.ns.cloudflare.com yisroel.ns.cloudflare.com yisroel.ns.cloudflare.com yisroel.ns.cloudflare.com yisroel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 72ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.9.237	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.131.18	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records5 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c01::1b 2a00:1450:4010:c01::1b 64.233.163.26	lh-in-x1b.1e100.net lh-in-f27.1e100.net lj-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)2 records 51ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:9ed	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:8312	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 50ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.9.237,172.67.131.18 ech=AEX+DQBBZgAgACAYdmgCkTsa2PgYW+zQSDaSnvysI4SnvjOrK1NFqHx9DAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9ed,2606:4700:3034::ac43:8312

📝 TXT Records4 records 278ms

TXT Record
v = spf1 ip4: 185.99.128.0/22 mx
v = spf1 ip4: 213.189.0.0/23 mx
v=spf1 +a +mx ip4:136.244.102.136 include:relay.mailchannels.net include:_spf.google.com include:spf.multisafepay.com ~all
v=spf1 include:_spf.google.com ~all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (poscentrum.dk)
~all (soft fail)	v=spf1 +a +mx ip4:136.244.102.136 include:relay.mailchannels.net include:_spf.google.com include:spf.multisafepay.com ~all
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC

Policy	Record (_dmarc.poscentrum.dk)
p=none (monitor only)	v=DMARC1; p=none;
p=none (monitor only)	v=DMARC1;p=none;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC110ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2411659067
Primary NS (MNAME)	summer.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

64ms

A

72ms

MX

42ms

AAAA

51ms

TXT

278ms

CAA

48ms

HTTPS

50ms

TLSA

98ms

SOA

0ms

MTA-STS

64ms

DNSSEC

110ms

SRV

87ms

Total

1819ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-09 07:18:50	1819ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-07-21 09:25:38	17308ms	6 NS 1 A 5 MX	🔓 Insecure	View
2026-07-19 15:55:49	1639ms	6 NS 1 A 5 MX	🔓 Insecure	View
2026-06-30 03:05:23	1130ms	4 NS 2 A 5 MX	🔓 Insecure	View
2026-06-24 08:19:46	1613ms	4 NS 2 A 5 MX	❓ Unknown	View
2026-06-17 16:42:07	1478ms	4 NS 2 A 5 MX	🔓 Insecure	View