503.dk

📜 Historical scan 2026-09-05 15:59:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

503.dk is a .dk domain served by 2 nameservers (elle.ns.cloudflare.com, greg.ns.cloudflare.com). It was registered on 28 October 2014 (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 5 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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
elle.ns.cloudflare.com	108.162.192.110 172.64.32.110 173.245.58.110 2606:4700:50::adf5:3a6e 2803:f800:50::6ca2:c06e 2a06:98c1:50::ac40:206e	elle.ns.cloudflare.com elle.ns.cloudflare.com elle.ns.cloudflare.com elle.ns.cloudflare.com elle.ns.cloudflare.com elle.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
greg.ns.cloudflare.com	108.162.193.115 172.64.33.115 173.245.59.115 2606:4700:58::adf5:3b73 2803:f800:50::6ca2:c173 2a06:98c1:50::ac40:2173	greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.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#

7 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	aspmx.l.google.com	142.250.150.27 2a00:1450:4010:c0a::1b 2a00:1450:4010:c0a::1b	la-in-f27.1e100.net lm-in-f27.1e100.net lm-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	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
30	300s	aspmx2.googlemail.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx3.googlemail.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	yukulwh-in-f27.1e100.net mad01s14-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx4.googlemail.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
30	300s	aspmx5.googlemail.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.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 133ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (503.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.503.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:2xigbyj3@ag.dmarcian.com;

📬 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 2026-10-08 03:57:40

www	104.21.22.107 172.67.204.97 2606:4700:3033::6815:166b 2606:4700:3033::ac43:cc61 (AS13335) (address records, no CNAME)
www vs bare domain	Only www resolves 503.dk: no address www.503.dk: 104.21.22.107 172.67.204.97 2606:4700:3033::6815:166b 2606:4700:3033::ac43:cc61 (AS13335) (all like this)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	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: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.503.dk	5y4WxgUFmmvq1EnFF31sMEXhGSd44o-47xkfDpV6ywA
TXT	_acme-challenge.503.dk	DX3AVrxy4hxYgcuASCHBKrzrnQn-W33fGvmKz9n1zik

🔗 TLSA / DANE#

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

🔐 DNSSEC#

103ms

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#

0ms

Field	Value
Serial	2414093493
Primary NS (MNAME)	elle.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 22:43:11

Field	Value
Registrar	Simply.com A/S
Registered	2014-10-28
Expires	2030-10-31 (1474d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
jonasboserup.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

30ms

29ms

28ms

AAAA

24ms

TXT

133ms

CAA

27ms

HTTPS

24ms

TLSA

124ms

SOA

0ms

MTA-STS

52ms

DNSSEC

103ms

SRV

43ms

Total

707ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:57:40	599ms	2 NS 0 A 7 MX	🔓 Insecure
2026-09-28 21:25:59	843ms	2 NS 0 A 7 MX	🔓 Insecure
2026-09-24 20:24:08	807ms	2 NS 0 A 7 MX	🔓 Insecure
2026-09-11 05:00:02	4132ms	2 NS 0 A 7 MX	🔓 Insecure
2026-09-05 15:59:09 shown	707ms	2 NS 0 A 7 MX	🔓 Insecure
2026-09-01 17:45:31	1281ms	2 NS 0 A 7 MX	🔓 Insecure
2026-08-30 15:36:39	2085ms	2 NS 0 A 7 MX	🔓 Insecure
2026-07-31 14:52:55	1688ms	2 NS 0 A 7 MX	🔓 Insecure
2026-06-20 04:05:54	736ms	2 NS 0 A 7 MX	🔓 Insecure
2026-06-16 12:38:32	743ms	2 NS 0 A 7 MX	🔓 Insecure