co-lumbus.dk

📜 Historical scan 2026-06-23 14:47:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

co-lumbus.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 3 February 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.236.62.147 is hosted by Google LLC (AS396982) in United States. Mail is handled by columbus-dk0e.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 225ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 210ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.236.62.147	3600s	147.62.236.23.bc.googleusercontent.com	AS396982	Google LLC	23.236.48.0/20	🇺🇸 United States	Council Bluffs

📧 MX Records#

1 records 205ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	columbus-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca09::5 2a01:111:f403:ca09::6 2a01:111:f403:ca09::b 52.101.68.12 52.101.68.16 52.101.68.5 52.101.73.22	mail-db4pr02cu00307.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.231.136
🔶 Autoconfig	23.236.62.147

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 500ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 609ms

TXT Record
MS=ms96212448
v=spf1 include:spf.protection.outlook.com include:spf.rpost.net -all

✉️ SPF#

Policy	Record (co-lumbus.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.rpost.net -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 2026-10-07 22:23:26

www CNAME	www131.wixdns.net (all on wixdns.net) → 34.149.87.45 (AS396982)
www vs bare domain	Same network co-lumbus.dk: 23.236.62.147 (AS396982) www.co-lumbus.dk: 34.149.87.45 (AS396982)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

319ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

200ms

Field	Value
Serial	2022050501
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-07 01:57:09

Field	Value
Registrar	Simply.com A/S
Registered	2009-02-03
Expires	2027-02-28 (128d)

📋 WHOIS#

⏱️ Lookup Timing#

225ms

210ms

205ms

AAAA

210ms

TXT

609ms

CAA

199ms

HTTPS

201ms

TLSA

461ms

SOA

200ms

MTA-STS

197ms

DNSSEC

319ms

SRV

500ms

Total

2254ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-08-27 13:55:21	9984ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-23 14:47:13 shown	2254ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-23 13:00:40	1184ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 00:27:00	65535ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:42:22	1927ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:31:30	611ms	2 NS 1 A 1 MX	🔓 Insecure