null.dk
Last scanned: 2026-08-31 04:18:41  ·  2928ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   79ms
🌍 A Records2 records   158ms
📧 MX Records1 records   152ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s smtp.skulp.net 193.89.248.25 loppen.christiania.org AS3292 TDC Holding A/S
🔷 AAAA Records (IPv6)2 records   224ms
🔐 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.null.dk null.dk.acme.empty.us
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC294ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026040861
Primary NS (MNAME)ns.netc.dk
Responsible (RNAME)hostmaster@netc.dk
Refresh3600s
Retry1800s
Expire3628800s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
79ms
A
158ms
MX
152ms
AAAA
224ms
TXT
515ms
CAA
94ms
HTTPS
151ms
TLSA
963ms
SOA
0ms
MTA-STS
235ms
DNSSEC
294ms
SRV
204ms
Total
2928ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-31 04:18:41 2928ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-29 13:01:31 4981ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-28 11:09:35 2813ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-26 09:51:01 3674ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-19 05:00:28 13195ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-18 01:20:17 11143ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-16 15:18:04 4121ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-13 07:58:27 6301ms 4 NS 2 A 1 MX 🔒 Secure View
2026-08-07 03:04:58 11117ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-25 14:56:59 3393ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-24 14:51:01 4650ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-23 13:27:42 24165ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-21 05:06:38 44680ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-14 03:53:59 10175ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-12 19:57:54 18120ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-08 21:02:38 26505ms 4 NS 2 A 1 MX 🔒 Secure View
2026-07-01 18:06:00 11080ms 4 NS 2 A 1 MX 🔒 Secure View
2026-06-26 10:21:13 2827ms 4 NS 2 A 1 MX 🔒 Secure View
2026-06-24 03:08:01 7095ms 4 NS 2 A 1 MX 🔒 Secure View
2026-06-24 01:02:54 1171ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-17 23:27:07 3457ms 4 NS 2 A 1 MX 🔒 Secure View
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