tdknudsen.dk

Records from scan: 2026-09-30 23:56:17 · 485ms total · last checked 2026-10-18 06:45 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tdknudsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.55.100.171 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.ihd.dk, backup-mx.post.tele.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 33ms

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#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.55.100.171	43200s	87-55-100-171-cable.dk.customer.tdc.net	AS3292	TDC Holding A/S	87.48.0.0/13	🇩🇰 Denmark	Struer Municipality

📧 MX Records#

2 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	mail.ihd.dk	87.55.100.171	87-55-100-171-cable.dk.customer.tdc.net	AS3292 TDC Holding A/S
20	43200s	backup-mx.post.tele.dk	80.160.77.115	backup-mx2.post.tele.dk	AS3292 TDC Holding A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	host.ihd.dk → 87.55.100.171
🔶 Autoconfig	host.ihd.dk → 87.55.100.171

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 153ms

TXT Record
v=spf1 ip4:87.55.100.171 a mx -all

✉️ SPF#

Policy	Record (tdknudsen.dk)
-all (hard fail)	v=spf1 ip4:87.55.100.171 a mx -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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#

checked 2026-10-09 05:10:27

www CNAME	host.ihd.dk (all on ihd.dk) → 87.55.100.171 (AS3292)
www vs bare domain	Same network tdknudsen.dk: 87.55.100.171 (AS3292) www.tdknudsen.dk: 87.55.100.171 (AS3292)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.tdknudsen.dk	host.ihd.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

43ms

Field	Value
Serial	2026093001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

33ms

39ms

38ms

AAAA

32ms

TXT

153ms

CAA

34ms

HTTPS

34ms

TLSA

61ms

SOA

43ms

MTA-STS

67ms

DNSSEC

58ms

SRV

66ms

Total

485ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 23:56:17 shown	485ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-27 00:15:06	1028ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-25 23:59:09	1953ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-23 22:40:40	792ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-12 09:57:30	6699ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-03 04:18:22	704ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-26 05:19:10	920ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-18 02:42:59	12539ms	2 NS 1 A 2 MX	🔒 Secure