1st.dk
Last scanned: 2026-08-31 13:13:30  ·  542ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   43ms
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 Records1 records   44ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.47.247.18 3600s one.com.webforward.g1i.one AS51468 One.com A/S 195.47.247.0/24 — —
📧 MX Records1 records   36ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
🔷 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC113ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082401
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 RegistrationWHOIS fetched 2026-08-18 14:05:27
FieldValue
RegistrarONE.COM A/S
Registered2011-02-16
Expires2027-02-28 (179d)
📋 WHOIS
⏱️ Lookup Timing
NS
43ms
A
44ms
MX
36ms
AAAA
50ms
TXT
201ms
CAA
50ms
HTTPS
34ms
TLSA
34ms
SOA
0ms
MTA-STS
97ms
DNSSEC
113ms
SRV
61ms
Total
542ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-31 13:13:30 542ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-25 01:47:26 1454ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-18 14:04:49 8649ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-25 03:59:14 548ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-03 21:08:49 16652ms 2 NS 0 A 0 MX ❓ Unknown View
2026-07-02 20:56:09 2442ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-24 01:54:24 970ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-19 09:49:39 505ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 12:43:25 804ms 2 NS 1 A 4 MX 🔒 Secure View
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