c5experten.dk

📜 Historical scan 2026-09-23 19:32:10 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c5experten.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 September 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.c5x.dk. 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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.c5x.dk	188.120.78.171	—	AS31027 GlobalConnect A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 154ms

TXT Record
v=spf1 mx -all

✉️ SPF#

Policy	Record (c5experten.dk)
-all (hard fail)	v=spf1 mx -all

📨 DMARC#

Policy	Record (_dmarc.c5experten.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100;

📬 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 2026-10-15 06:55:58

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Only www resolves c5experten.dk: no address www.c5experten.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

127ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092001
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 2026-10-14 07:24:36

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-09-17
Expires	2027-09-30 (348d)

🔗 Same registrant#

4 domains

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
elkaerparken.dk	Punktum dk A/S (direct)
mailtune.dk	Punktum dk A/S (direct)
sdcloud.dk	Punktum dk A/S (direct)
uninest.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

32ms

44ms

AAAA

36ms

TXT

154ms

CAA

41ms

HTTPS

33ms

TLSA

71ms

SOA

0ms

MTA-STS

56ms

DNSSEC

127ms

SRV

53ms

Total

2989ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 06:55:58	2190ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-14 05:54:16	2264ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-23 19:32:10 shown	2989ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-27 20:44:14	774ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-09 17:50:22	6780ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-30 17:08:17	547ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-30 11:03:46	659ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-26 09:02:11	653ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-20 20:05:30	526ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:50:13	532ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:41:00	1258ms	2 NS 0 A 1 MX	🔒 Secure