opo.dk

📜 Historical scan 2026-06-23 20:26:44  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opo.dk is a .dk domain served by 2 nameservers (archer.ns.cloudflare.com, melina.ns.cloudflare.com). It was registered on 23 July 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.46.114 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. The zone is of unknown DNSSEC status, 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   46ms
NameserverIP addressesPTRASN / ISP
archer.ns.cloudflare.com 108.162.195.136
162.159.44.136
172.64.35.136
2606:4700:58::a29f:2c88
2803:f800:50::6ca2:c388
2a06:98c1:50::ac40:2388		 archer.ns.cloudflare.com
archer.ns.cloudflare.com
archer.ns.cloudflare.com
archer.ns.cloudflare.com
archer.ns.cloudflare.com
archer.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
melina.ns.cloudflare.com 108.162.194.184
162.159.38.184
172.64.34.184
2606:4700:50::a29f:26b8
2803:f800:50::6ca2:c2b8
2a06:98c1:50::ac40:22b8		 melina.ns.cloudflare.com
melina.ns.cloudflare.com
melina.ns.cloudflare.com
melina.ns.cloudflare.com
melina.ns.cloudflare.com
melina.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🌍 A Records#

2 records   43ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.46.114 600s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.168.119 600s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   41ms
PriorityTTLMail ServerIP addressesPTRASN
0 600s .  Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover172.67.168.119
🔶 Autoconfig104.21.46.114

🔷 AAAA Records (IPv6)#

2 records   43ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::ac43:a877 600s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::6815:2e72 600s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   43ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.46.114,172.67.168.119 ech=AEX+DQBBCQAgACAGUZ40o5aARpV9dtMyeXlYe4w3Ht0/gJ4H4o6YQ7AocgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:a877,2606:4700:3037::6815:2e72

📝 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 2026-10-18 03:38:48
www104.21.46.114 172.67.168.119 2606:4700:3030::6815:2e72 2606:4700:3034::ac43:a877 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.opo.dk 5FUmYqNLiq6IgIdhBMLPjaX1xRXWejuEltoPmLQe1bk
TXT _acme-challenge.opo.dk CjOZOO2DXrpS6EG2M3nUqbyoGeur9Pf3s7-_OXOe85A

🔗 TLSA / DANE#

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

🔐 DNSSEC#

83ms
CheckResult
Validation Status❓ Unknown
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsbroken trust chain resolving 'opo.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

52ms
FieldValue
Serial2407487890
Primary NS (MNAME)archer.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-13 16:34:35
FieldValue
RegistrarNetsite A/S
Registered2001-07-23
Expires2027-09-30 (344d)

🔗 Same registrant#

6 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
c2h6o.dkNetsite A/S
ibenpedersen.dkNetsite A/S
matmagi.dknordicway ApS
nacl.dkNetsite A/S
onlineblaabog.dkNetsite A/S
vildmedtech.dkNetsite A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
46ms
A
43ms
MX
41ms
AAAA
43ms
TXT
225ms
CAA
48ms
HTTPS
43ms
TLSA
81ms
SOA
52ms
MTA-STS
36ms
DNSSEC
83ms
SRV
2025ms
Total
2633ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-18 03:38:48 436ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-25 01:18:17 583ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-18 07:47:44 1510ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-12 11:36:06 991ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-03 19:44:22 9447ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-31 11:09:23 1699ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-27 22:32:07 1004ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-20 11:00:12 6551ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-16 03:04:16 5893ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-19 09:33:57 2749ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-28 02:46:09 1784ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-26 00:21:36 771ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-23 20:26:44 shown 2633ms 2 NS 2 A 1 MX ❓ Unknown
2026-06-21 11:37:40 1113ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-17 12:10:43 943ms 2 NS 2 A 0 MX 🔓 Insecure
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