cogco.dk

📜 Historical scan 2026-06-16 21:50:15  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cogco.dk is a .dk domain served by 2 nameservers (ali.ns.cloudflare.com, terin.ns.cloudflare.com). It was registered on 16 October 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.44.41 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cogco-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, has no 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#

2 records   56ms
NameserverIP addressesPTRASN / ISP
ali.ns.cloudflare.com — — —
terin.ns.cloudflare.com — — —

🌍 A Records#

2 records   34ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.44.41 — — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.194.205 — — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   41ms
PriorityTTLMail ServerIP addressesPTRASN
0 — cogco-dk.mail.protection.outlook.com 52.101.68.18
52.101.68.3
52.101.68.5
52.101.73.11		 mail-db4pr02cu00302.inbound.protection.outlook.com
mail-db7pr03cu00403.inbound.protection.outlook.com
mail-du2pr03cu00105.inbound.protection.outlook.com
mail-am1pr04cu00103.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

2 records   53ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::ac43:c2cd — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3036::6815:2c29 — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   96ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.44.41,172.67.194.205 ech=AEX+DQBBlwAgACARtnhQ7LTw1FhCMpClda8WTnV4Yh2JhRcKaIGJtucSdAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:c2cd,2606:4700:3036::6815:2c29

📝 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#

latest probe, not this scan · checked 2026-10-25 04:06:12
www104.21.44.41 172.67.194.205 2606:4700:3033::ac43:c2cd 2606:4700:3034::6815:2c29 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

63ms
CheckResult
Validation Status⚠️ Bogus
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsbroken trust chain resolving 'cogco.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

55ms
FieldValue
Serial2405920810
Primary NS (MNAME)ali.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-06 10:25:47
FieldValue
RegistrarRealtime Register B.V.
Registered2018-10-16
Expires2027-07-31 (276d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
56ms
A
34ms
MX
41ms
AAAA
53ms
TXT
105ms
CAA
34ms
HTTPS
96ms
TLSA
652ms
SOA
55ms
MTA-STS
33ms
DNSSEC
63ms
SRV
0ms
Total
1031ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-25 04:06:12 550ms 2 NS 2 A 1 MX 🔓 Insecure
2026-10-01 04:18:42 1170ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-28 16:01:12 903ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-25 15:19:06 3248ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-31 15:16:43 1302ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-25 15:07:07 11120ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-24 14:50:14 510ms 2 NS 1 A 0 MX 🔓 Insecure
2026-06-27 09:40:46 1147ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-24 02:19:12 913ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-16 21:50:15 shown 1031ms 2 NS 2 A 1 MX ⚠️ Bogus
2026-06-16 21:40:42 1236ms 2 NS 2 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone