columbia.dk

📜 Historical scan 2026-06-28 13:48:55  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

columbia.dk is a .dk domain served by 6 nameservers (pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org and 3 more). It was registered on 22 November 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 13.33.187.23 is hosted by Amazon.com, Inc. (AS16509) in United States. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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#

6 records   219ms
NameserverIP addressesPTRASN / ISP
pdns1.ultradns.net 2001:502:f3ff::1
204.74.108.1		 pdns1.ultradns.net
pdns1.ultradns.net		 AS12008 Vercara, LLC
AS12008 Vercara, LLC
pdns2.ultradns.net 204.74.109.1
2610:a1:1014::1		 pdns2.ultradns.net
pdns2.ultradns.net		 AS12008 Vercara, LLC
AS12008 Vercara, LLC
pdns3.ultradns.org 199.7.68.1
2610:a1:1015::1		 pdns3.ultradns.org
pdns3.ultradns.org		 AS12008 Vercara, LLC
AS12008 Vercara, LLC
pdns4.ultradns.org 199.7.69.1
2001:502:4612::1		 pdns4.ultradns.org
pdns4.ultradns.org		 AS12008 Vercara, LLC
AS12008 Vercara, LLC
pdns5.ultradns.info 204.74.114.1
2610:a1:1016::1		 pdns5.ultradns.info
pdns5.ultradns.info		 AS12008 Vercara, LLC
AS12008 Vercara, LLC
pdns6.ultradns.co.uk 204.74.115.1
2610:a1:1017::1		 pdns6.ultradns.co.uk
pdns6.ultradns.co.uk		 AS12008 Vercara, LLC
AS12008 Vercara, LLC

🌍 A Records#

4 records   316ms
IPTTLPTRASNISP / OrgCIDRCountryCity
13.33.187.23 60s server-13-33-187-23.fra60.r.cloudfront.net AS16509 Amazon.com, Inc. 13.32.0.0/11 🇺🇸 United States New York
13.33.187.30 60s server-13-33-187-30.fra60.r.cloudfront.net AS16509 Amazon.com, Inc. 13.32.0.0/11 🇺🇸 United States New York
13.33.187.53 60s server-13-33-187-53.fra60.r.cloudfront.net AS16509 Amazon.com, Inc. 13.32.0.0/11 🇺🇸 United States New York
13.33.187.71 60s server-13-33-187-71.fra60.r.cloudfront.net AS16509 Amazon.com, Inc. 13.32.0.0/11 🇺🇸 United States New York

📧 MX Records#

📧
No MX records found

🔷 AAAA Records (IPv6)#

8 records   327ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2600:9000:235a:1000:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:200:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:4a00:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:6600:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:8200:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:da00:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:ee00:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —
2600:9000:235a:f600:b:934b:b300:93a1 60s — AS16509 Amazon.com, Inc. 2600:9000:0:0:0:0:0:0/34 🇺🇸 United States —

🔐 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#

PolicyRecord (_dmarc.columbia.dk)
p=reject v=DMARC1; p=reject; rua=mailto:DMARC_Monitoring@Columbia.com

📬 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 2026-10-16 21:08:50
www CNAMEd89czth52so24.cloudfront.net (all on cloudfront.net)
www vs bare domainSame network
WildcardNo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

478ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

325ms
FieldValue
Serial2011030130
Primary NS (MNAME)pdns1.ultradns.net
Responsible (RNAME)jspiegel@columbia.com
Refresh3600s
Retry3600s
Expire432000s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-09 14:43:24
FieldValue
RegistrarMarkMonitor Inc.
Registered2000-11-22
Expires2026-12-31 (70d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
219ms
A
316ms
MX
299ms
AAAA
327ms
TXT
654ms
CAA
345ms
HTTPS
330ms
TLSA
766ms
SOA
325ms
MTA-STS
316ms
DNSSEC
478ms
SRV
382ms
Total
7214ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-01 03:17:52 833ms 6 NS 4 A 0 MX 🔓 Insecure
2026-09-24 14:21:37 9738ms 6 NS 4 A 0 MX 🔓 Insecure
2026-09-12 12:11:03 3419ms 6 NS 4 A 0 MX 🔓 Insecure
2026-06-28 13:48:55 shown 7214ms 6 NS 4 A 0 MX 🔓 Insecure
2026-06-22 20:06:21 909ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-20 22:11:45 760ms 6 NS 4 A 0 MX 🔓 Insecure
2026-06-20 18:11:58 4920ms 6 NS 4 A 0 MX 🔓 Insecure
2026-06-16 21:50:40 508ms 6 NS 4 A 0 MX 🔓 Insecure
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