clausborg.dk

📜 Historical scan 2026-09-30 11:11:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

clausborg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 July 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 52.17.45.100 is hosted by Amazon.com, Inc. (AS16509) in Ireland. Mail is handled by mx10.check4spam.dk, mx20.check4spam.dk and 1 more. The zone is DNSSEC-signed and validates, has no 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 56ms

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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.17.45.100	43200s	ec2-52-17-45-100.eu-west-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	52.16.0.0/14	🇮🇪 Ireland	Dublin

📧 MX Records#

3 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx10.check4spam.dk	149.13.75.27 2001:978:2:7::162:100	fe1-r3-in.fra02.l.antispamcloud.com fe1-r3-in.fra02.l.antispamcloud.com	AS16633 N-able Technologies, Inc. AS174 Cogent Communications, LLC
10	600s	mx20.check4spam.dk	154.59.193.124 2001:978:2:6::f:124	fe3-r3-in.du01.l.antispamcloud.com fe3-r3-in.du01.l.antispamcloud.com	AS16633 N-able Technologies, Inc. AS174 Cogent Communications, LLC
10	600s	mx40.check4spam.dk	154.59.104.23 2001:978:2:2c::137:100	fe2-r3-in.ams14.l.antispamcloud.com fe2-r3-in.ams14.l.antispamcloud.com	AS174 Cogent Communications, LLC AS174 Cogent Communications, LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	clausborg.dk → 52.17.45.100
🔶 Autoconfig	clausborg.dk → 52.17.45.100

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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#

latest probe, not this scan · checked 2026-10-08 13:07:39

www	52.17.45.100 (AS16509) (address records, no CNAME)
www vs bare domain	Same network clausborg.dk: 52.17.45.100 (AS16509) www.clausborg.dk: 52.17.45.100 (AS16509)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.clausborg.dk	clausborg.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

67ms

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

🏷️ SOA#

53ms

Field	Value
Serial	2026090101
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 06:35:13

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-07-01
Expires	2027-09-30 (348d)

🔗 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
claus-borg.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

56ms

32ms

28ms

AAAA

45ms

TXT

155ms

CAA

39ms

HTTPS

42ms

TLSA

107ms

SOA

53ms

MTA-STS

51ms

DNSSEC

67ms

SRV

59ms

Total

959ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 13:07:39	1657ms	2 NS 1 A 3 MX	🔒 Secure
2026-10-02 11:18:24	2446ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-30 11:11:13 shown	959ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-29 20:39:37	666ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-24 01:11:49	637ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-16 21:56:06	702ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-03 07:13:01	839ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-01 23:35:21	701ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-16 21:10:05	679ms	2 NS 1 A 3 MX	🔒 Secure