sero.dk
📜 Historical scan 2026-06-18 09:13:09  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   304ms
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   180ms
IPTTLPTRASNISP / OrgCIDRCountryCity
85.218.177.103 3600s sorresiig.dk AS39642 Sinal A/S 85.218.128.0/17 🇩🇰 Denmark Silkeborg
📧 MX Records
📧
No MX records found
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoversero.dk → 85.218.177.103
🔶 Autoconfigsero.dk → 85.218.177.103
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   518ms
TXT Record
v=DMARC1; p=quarantine; pct=100;
v=spf1 mx -all
✉️ SPF
PolicyRecord (sero.dk)
-all (hard fail) v=spf1 mx -all
📨 DMARC
PolicyRecord (_dmarc.sero.dk)
p=quarantine v=DMARC1; p=quarantine; pct=100;
📬 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)
🔐 DNSSEC436ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA320ms
FieldValue
Serial2026060401
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
304ms
A
180ms
MX
214ms
AAAA
321ms
TXT
518ms
CAA
313ms
HTTPS
317ms
TLSA
503ms
SOA
320ms
MTA-STS
330ms
DNSSEC
436ms
SRV
323ms
Total
2701ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-08 20:09:32 4841ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-05 19:46:05 681ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-04 23:01:02 4624ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-18 09:13:09 2701ms 2 NS 1 A 0 MX 🔒 Secure View
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