colberg-assurance.dk

📜 Historical scan 2026-06-16 21:45:45 · ← Latest scan

colberg-assurance.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. Mail is handled by colbergassurance-dk01i.mail.protection.outlook.com. 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 43ms

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

🌍 A Records

🌍

No A records found

📧 MX Records

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	colbergassurance-dk01i.mail.protection.outlook.com	52.101.68.15 52.101.68.18 52.101.73.1 52.101.73.16	mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records

2 records 119ms

TXT Record
MS=ms44146464
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (colberg-assurance.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -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

latest probe, not this scan · checked 2026-09-30 18:32:53

www	Address record (no CNAME)
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
k1	dkim.mcsv.net	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

🔗 TLSA / DANE

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

🔐 DNSSEC

122ms

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

🏷️ SOA

47ms

Field	Value
Serial	2026061101
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

43ms

47ms

AAAA

45ms

TXT

119ms

CAA

40ms

HTTPS

39ms

TLSA

101ms

SOA

47ms

MTA-STS

116ms

DNSSEC

122ms

SRV

0ms

Total

530ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-16 06:14:31	1173ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-06 11:54:49	653ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-25 15:34:58	2883ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-11 23:56:07	1295ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-17 14:31:30	1388ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-11 21:29:50	1322ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-27 07:54:24	1861ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-25 14:57:59	2209ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-22 16:37:42	865ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-21 11:44:18	1121ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 21:45:45 shown	530ms	2 NS 0 A 1 MX	🔒 Secure