heydorn.dk

📜 Historical scan 2026-09-25 17:36:47  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

heydorn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.186.54.20 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by servbyt.heydorn.dk, backup-mx.post.tele.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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   37ms
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   43ms
IPTTLPTRASNISP / OrgCIDRCountryCity
5.186.54.20 43200s 5.186.54.20.static.fibianet.dk AS44869 FIBIA P/S 5.186.0.0/16 🇩🇰 Denmark Lystrup

📧 MX Records#

2 records   35ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s servbyt.heydorn.dk 5.186.54.20 5.186.54.20.static.fibianet.dk AS44869 FIBIA P/S
20 43200s backup-mx.post.tele.dk — — —

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverheydorn.dk → 5.186.54.20
🔶 Autoconfigheydorn.dk → 5.186.54.20

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   146ms
TXT Record
v=spf1 a ptr ip4:5.186.54.20 a:backup-mx.post.tele.dk a:servbyt.heydorn.dk ?all

✉️ SPF#

PolicyRecord (heydorn.dk)
?all (neutral) v=spf1 a ptr ip4:5.186.54.20 a:backup-mx.post.tele.dk a:servbyt.heydorn.dk ?all

📨 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 2026-10-08 21:00:49
www CNAMEheydorn.dk (all on heydorn.dk)
www vs bare domainSame network
heydorn.dk: 5.186.54.20 (AS44869)
www.heydorn.dk: 5.186.54.20 (AS44869)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ?all

  • warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)
  • warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.heydorn.dk heydorn.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

120ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026092501
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

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

⏱️ Lookup Timing#

NS
37ms
A
43ms
MX
35ms
AAAA
38ms
TXT
146ms
CAA
33ms
HTTPS
44ms
TLSA
78ms
SOA
0ms
MTA-STS
50ms
DNSSEC
120ms
SRV
56ms
Total
774ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-01 19:50:10 946ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-29 19:22:44 565ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-25 17:36:47 shown 774ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-26 12:56:46 728ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-30 02:25:28 16788ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-26 21:05:12 16644ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-02 06:59:54 18014ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-20 17:23:17 1198ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-17 11:15:10 4735ms 2 NS 1 A 2 MX 🔒 Secure
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