cos.dk

📜 Historical scan 2026-08-08 04:11:52  ·  ← Latest scan
🧟 Lame delegation ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cos.dk is a registered .dk domain whose nameservers (ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com and 1 more) do not answer for it, so it is currently a lame delegation and does not resolve. It was already in the .dk zone when our tracking began on 16 June 2026. 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#

4 records   712ms
NameserverIP addressesPTRASN / ISP
ns1.a2hosting.com 13.248.158.180 a79764cc55c0ac9c0.awsglobalaccelerator.com AS16509 Amazon.com, Inc.
ns2.a2hosting.com 75.2.118.134 abc65dd9a44b5332f.awsglobalaccelerator.com AS16509 Amazon.com, Inc.
ns3.a2hosting.com 76.223.26.245 a79764cc55c0ac9c0.awsglobalaccelerator.com AS16509 Amazon.com, Inc.
ns4.a2hosting.com 99.83.147.209 abc65dd9a44b5332f.awsglobalaccelerator.com AS16509 Amazon.com, Inc.

🌍 A Records#

🌍
No A records found

📧 MX Records#

📧
No MX records found

🔷 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9764ms
CheckResult
Validation Status❓ Unknown (the delegated nameservers don't answer)
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup
📋 WHOIS#

⏱️ Lookup Timing#

NS
712ms
A
830ms
MX
744ms
AAAA
716ms
TXT
3471ms
CAA
693ms
HTTPS
771ms
TLSA
694ms
SOA
48ms
MTA-STS
773ms
DNSSEC
9764ms
SRV
778ms
Total
12669ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-08-28 07:55:08 5796ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-23 05:44:09 8819ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-22 05:36:11 5260ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-21 05:13:11 3085ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-20 04:45:19 11641ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-19 04:03:42 14702ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-18 03:03:04 6829ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-17 00:53:11 12693ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-15 13:09:12 12784ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-14 02:44:51 7532ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-12 11:22:49 5699ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-11 10:20:26 5892ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-10 09:47:50 2182ms 4 NS 0 A 0 MX ❓ Unknown
2026-08-08 04:11:52 shown 12669ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-28 21:59:22 12683ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-27 20:33:08 12833ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-26 20:18:04 7181ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-25 20:07:33 2182ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-24 19:46:00 2542ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-23 19:13:42 2633ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-22 15:55:57 2629ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-21 15:35:58 2383ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-19 06:32:59 22827ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-18 05:01:57 2297ms 4 NS 0 A 0 MX ❓ Unknown
2026-07-16 18:40:49 5938ms 4 NS 0 A 0 MX ❓ Unknown
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