citysupport.dk

📜 Historical scan 2026-06-16 22:28:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

citysupport.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 February 2003 (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 DNSSEC-signed and validates, 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 1377ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	—	—	—
ns02.one.com	—	—	—

🌍 A Records#

🌍

No A records found

📧 MX Records#

7 records 1618ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	aspmx.l.google.com	64.233.164.26	lf-in-f26.1e100.net	AS15169 Google LLC
20	—	alt1.aspmx.l.google.com	192.178.158.27	lcdels-in-f27.1e100.net	AS15169 Google LLC
20	—	alt2.aspmx.l.google.com	192.178.211.26	lcbomp-in-f26.1e100.net	AS15169 Google LLC
30	—	aspmx2.googlemail.com	192.178.211.27	lcbomp-in-f27.1e100.net	AS15169 Google LLC
30	—	aspmx3.googlemail.com	172.253.152.27	yulpptr-in-f27.1e100.net	AS15169 Google LLC
30	—	aspmx4.googlemail.com	172.253.158.26	so-in-f26.1e100.net	AS15169 Google LLC
30	—	aspmx5.googlemail.com	172.253.158.26	so-in-f26.1e100.net	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 4997ms

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

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.citysupport.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:05467b80528a516@rep.dmarcanalyzer.com; ruf=mailto:05467b80528a516@for.dmarcanalyzer.com; fo=1;

📬 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 2026-10-14 22:05:40

www CNAME	ghs.google.com (all on google.com) → 142.250.154.121 2a00:1450:4001:c0f::79 (AS15169)
www vs bare domain	Only www resolves citysupport.dk: no address www.citysupport.dk: 142.250.154.121 2a00:1450:4001:c0f::79 (AS15169) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ 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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

10263ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

1136ms

Field	Value
Serial	2026053101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-02 17:40:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2003-02-13
Expires	2029-02-28 (860d)

📋 WHOIS#

⏱️ Lookup Timing#

1377ms

257ms

1618ms

AAAA

1657ms

TXT

4997ms

CAA

1123ms

HTTPS

965ms

TLSA

5581ms

SOA

1136ms

MTA-STS

607ms

DNSSEC

10263ms

SRV

0ms

Total

65535ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 17:09:22	667ms	2 NS 0 A 7 MX	🔒 Secure
2026-09-30 16:59:27	754ms	2 NS 0 A 7 MX	🔒 Secure
2026-09-30 08:28:54	465ms	2 NS 0 A 7 MX	🔒 Secure
2026-09-03 15:20:34	658ms	2 NS 0 A 7 MX	🔒 Secure
2026-08-07 07:14:53	1323ms	2 NS 0 A 7 MX	🔒 Secure
2026-07-02 02:40:41	1350ms	2 NS 0 A 7 MX	🔒 Secure
2026-07-02 00:36:36	5030ms	2 NS 0 A 7 MX	🔒 Secure
2026-06-16 22:28:23 shown	65535ms	2 NS 0 A 7 MX	🔒 Secure
2026-06-16 21:10:53	432ms	2 NS 0 A 7 MX	🔒 Secure
2026-06-16 21:05:34	2264ms	2 NS 0 A 7 MX	🔒 Secure
2026-06-16 21:00:59	852ms	2 NS 0 A 7 MX	🔒 Secure