opencore.dk

Records from scan: 2026-10-04 08:23:22  ·  534ms total  ·  last checked 2026-10-17 21:12 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opencore.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 28 September 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.63.102.90 is hosted by TDC Holding A/S (AS3292) 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   32ms
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   41ms
IPTTLPTRASNISP / OrgCIDRCountryCity
80.63.102.90 3600s — AS3292 TDC Holding A/S 80.62.0.0/15 🇩🇰 Denmark —

📧 MX Records#

1 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoveropencore.dk → 80.63.102.90
🔶 Autoconfigopencore.dk → 80.63.102.90

🔷 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 2026-10-11 13:59:51
www80.63.102.90 (AS3292) (address records, no CNAME)
www vs bare domainSame network
opencore.dk: 80.63.102.90 (AS3292)
www.opencore.dk: 80.63.102.90 (AS3292)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.opencore.dk opencore.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

82ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

43ms
FieldValue
Serial2026100301
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-04 09:00:32
FieldValue
RegistrarONE.COM A/S
Registered2021-09-28
Expires2027-09-27 (343d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
32ms
A
41ms
MX
42ms
AAAA
38ms
TXT
143ms
CAA
45ms
HTTPS
52ms
TLSA
46ms
SOA
43ms
MTA-STS
62ms
DNSSEC
82ms
SRV
59ms
Total
534ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-04 08:23:22 shown 534ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-29 07:52:00 807ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-27 07:13:17 680ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-23 13:36:56 861ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-11 17:27:33 910ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-17 19:24:01 934ms 2 NS 1 A 4 MX 🔒 Secure
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