poscentrum.dk

📜 Historical scan 2026-06-17 16:42:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

poscentrum.dk is a .dk domain served by 4 nameservers (ns1.nexcess.net, ns2.nexcess.net, ns3.nexcess.net and 1 more). It was registered on 23 April 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 175ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.nexcess.net	192.240.188.188 2607:f7c0:8001::a	— —	AS36444 Liquid Web, L.L.C AS36444 Liquid Web, L.L.C
ns2.nexcess.net	192.240.188.166 2607:f7c0:8002::a	— —	AS36444 Liquid Web, L.L.C AS36444 Liquid Web, L.L.C
ns3.nexcess.net	192.240.188.144 2607:f7c0:8001::b	— —	AS36444 Liquid Web, L.L.C AS36444 Liquid Web, L.L.C
ns4.nexcess.net	192.240.188.122 2607:f7c0:8002::b	— —	AS36444 Liquid Web, L.L.C AS36444 Liquid Web, L.L.C

🌍 A Records#

2 records 202ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.16.81.94	—	—	AS13335	—	—	—	—
104.16.82.94	—	—	AS13335	—	—	—	—

📧 MX Records#

5 records 216ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	—	aspmx.l.google.com	142.250.147.27 2a00:1450:4025:c03::1b	rd-in-f27.1e100.net rc-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt1.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1b	lcbomp-in-f27.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt4.aspmx.l.google.com	192.178.230.26 2404:6800:400b:c01b::1a	yunrtab-in-f26.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records 510ms

TXT Record
v = spf1 ip4: 185.99.128.0/22 mx
v = spf1 ip4: 213.189.0.0/23 mx
v=spf1 +a +mx +ip4:185.145.13.166 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 +ip4:185.145.13.166 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;

📬 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-13 00:05:53

www	104.21.9.237 172.67.131.18 2606:4700:3030::6815:9ed 2606:4700:3034::ac43:8312 (AS13335) (address records, no CNAME)
www vs bare domain	Same network poscentrum.dk: 104.21.9.237 172.67.131.18 2606:4700:3030::6815:9ed 2606:4700:3034::ac43:8312 (AS13335) www.poscentrum.dk: 104.21.9.237 172.67.131.18 2606:4700:3030::6815:9ed 2606:4700:3034::ac43:8312 (AS13335)
Wildcard	No

✍️ DKIM keys#

3 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit
s1	s1.domainkey.u6036373.wl124.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u6036373.wl124.sendgrid.net	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: ~all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

277ms

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

🏷️ SOA#

187ms

Field	Value
Serial	1747290639
Primary NS (MNAME)	ns1.nexcess.net
Responsible (RNAME)	hostmaster@poscentrum.dk
Refresh	7200s
Retry	2048s
Expire	1048576s
Minimum (neg-cache TTL)	2560s

📋 Registration#

WHOIS fetched 2026-10-06 12:15:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-04-23
Expires	2027-04-30 (194d)

📋 WHOIS#

⏱️ Lookup Timing#

175ms

202ms

216ms

AAAA

377ms

TXT

510ms

CAA

364ms

HTTPS

208ms

TLSA

320ms

SOA

187ms

MTA-STS

191ms

DNSSEC

277ms

SRV

0ms

Total

1478ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 12:11:39	3227ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 09:54:56	733ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-09 07:18:50	1819ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-21 09:25:38	17308ms	6 NS 1 A 5 MX	🔓 Insecure
2026-07-19 15:55:49	1639ms	6 NS 1 A 5 MX	🔓 Insecure
2026-06-30 03:05:23	1130ms	4 NS 2 A 5 MX	🔓 Insecure
2026-06-24 08:19:46	1613ms	4 NS 2 A 5 MX	❓ Unknown
2026-06-17 16:42:07 shown	1478ms	4 NS 2 A 5 MX	🔓 Insecure