510.dk

📜 Historical scan 2026-06-20 03:10:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

510.dk is a .dk domain served by 2 nameservers (dahlia.ns.cloudflare.com, quentin.ns.cloudflare.com). It was registered on 21 December 2005 (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#

2 records 85ms

Nameserver	IP addresses	PTR	ASN / ISP
dahlia.ns.cloudflare.com	108.162.192.89 172.64.32.89 173.245.58.89 2606:4700:50::adf5:3a59 2803:f800:50::6ca2:c059 2a06:98c1:50::ac40:2059	dahlia.ns.cloudflare.com dahlia.ns.cloudflare.com dahlia.ns.cloudflare.com dahlia.ns.cloudflare.com dahlia.ns.cloudflare.com dahlia.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
quentin.ns.cloudflare.com	108.162.195.7 162.159.44.7 172.64.35.7 2606:4700:58::a29f:2c07 2803:f800:50::6ca2:c307 2a06:98c1:50::ac40:2307	quentin.ns.cloudflare.com quentin.ns.cloudflare.com quentin.ns.cloudflare.com quentin.ns.cloudflare.com quentin.ns.cloudflare.com quentin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

5 records 66ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c08::1a 2a00:1450:4010:c08::1a 64.233.164.27	lg-in-f26.1e100.net lg-in-x1a.1e100.net lf-in-f27.1e100.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::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	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	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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 329ms

TXT Record
v=spf1 include:_spf.google.com include:spf.messagingengine.com include:_spf.google.com -all

✉️ SPF#

Policy	Record (510.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.messagingengine.com include:_spf.google.com -all

📨 DMARC#

Policy	Record (_dmarc.510.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; rua=mailto:re+uzertn5vquh@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 2026-10-12 20:54:52

www	104.21.0.237 172.67.128.101 2606:4700:3033::6815:ed 2606:4700:3033::ac43:8065 (AS13335) (address records, no CNAME)
www vs bare domain	Only www resolves 510.dk: no address www.510.dk: 104.21.0.237 172.67.128.101 2606:4700:3033::6815:ed 2606:4700:3033::ac43:8065 (AS13335) (all like this)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

169ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

76ms

Field	Value
Serial	2406645271
Primary NS (MNAME)	dahlia.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 09:38:28

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2005-12-21
Expires	2026-12-31 (75d)

📋 WHOIS#

⏱️ Lookup Timing#

85ms

87ms

66ms

AAAA

92ms

TXT

329ms

CAA

81ms

HTTPS

82ms

TLSA

73ms

SOA

76ms

MTA-STS

92ms

DNSSEC

169ms

SRV

101ms

Total

687ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 09:01:06	831ms	2 NS 0 A 5 MX	🔓 Insecure
2026-09-27 07:48:22	826ms	2 NS 0 A 5 MX	🔓 Insecure
2026-09-23 18:52:09	777ms	2 NS 0 A 5 MX	🔓 Insecure
2026-09-20 22:04:38	1317ms	2 NS 0 A 5 MX	🔓 Insecure
2026-09-08 20:10:34	1741ms	2 NS 0 A 5 MX	🔓 Insecure
2026-08-27 12:28:23	1297ms	2 NS 0 A 5 MX	🔓 Insecure
2026-08-25 11:15:04	690ms	2 NS 0 A 5 MX	🔓 Insecure
2026-08-06 20:47:40	17355ms	2 NS 0 A 5 MX	❓ Unknown
2026-07-23 11:43:34	2012ms	2 NS 0 A 5 MX	🔓 Insecure
2026-07-12 04:32:31	1351ms	2 NS 0 A 5 MX	🔓 Insecure
2026-06-22 20:44:42	831ms	2 NS 0 A 5 MX	🔓 Insecure
2026-06-20 03:10:21 shown	687ms	2 NS 0 A 5 MX	🔓 Insecure
2026-06-19 18:17:14	798ms	2 NS 0 A 5 MX	🔓 Insecure
2026-06-16 12:47:57	594ms	2 NS 0 A 5 MX	🔓 Insecure