col.dk

Records from scan: 2026-10-08 10:45:30  ·  17592ms total  ·  last checked 2026-10-21 06:24 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

col.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 11 November 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.61.237.51 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by .. 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   176ms
NameserverIP addressesPTRASN / 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   135ms
IPTTLPTRASNISP / OrgCIDRCountryCity
217.61.237.51 43200s — AS48854 team.blue Denmark A/S 217.61.237.0/24 🇩🇰 Denmark —

📧 MX Records#

1 records   211ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)

🔷 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#

checked 2026-10-08 10:45:30
www217.61.237.51 (AS48854) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

471ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

62ms
FieldValue
Serial2026100701
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-12 10:14:55
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2004-11-11
Expires2026-11-30 (38d)

🔗 Same registrant#

16 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).

DomainRegistrar
aleksika.dkPunktum dk A/S (direct)
clicks.dkPunktum dk A/S (direct)
diskussion.dkPunktum dk A/S (direct)
dubuy.dkPunktum dk A/S (direct)
ferieportal.dkPunktum dk A/S (direct)
lampeudsalg.dkPunktum dk A/S (direct)
ledninger.dkPunktum dk A/S (direct)
lingeri4u.dkPunktum dk A/S (direct)
lova.dkPunktum dk A/S (direct)
minferie.dkPunktum dk A/S (direct)
nbd.dkPunktum dk A/S (direct)
pensionat.dkPunktum dk A/S (direct)
prisvogter.dkPunktum dk A/S (direct)
procesforbedring.dkPunktum dk A/S (direct)
unm.dkPunktum dk A/S (direct)
wwo.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
176ms
A
135ms
MX
211ms
AAAA
189ms
TXT
608ms
CAA
171ms
HTTPS
162ms
TLSA
16105ms
SOA
62ms
MTA-STS
201ms
DNSSEC
471ms
SRV
204ms
Total
17592ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-08 10:45:30 shown 17592ms 2 NS 1 A 1 MX 🔒 Secure
2026-10-02 09:17:00 4321ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-30 08:56:39 4510ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-22 15:45:27 16683ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-23 00:51:24 8833ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-16 21:45:28 6710ms 2 NS 1 A 4 MX 🔒 Secure
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