optom.dk
📜 Historical scan 2026-06-17 14:40:49  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   49ms
NameserverIP addressesPTRASN / ISP
ns1.dotserv.com 178.20.218.61
2a01:7cc0:101:ffff::51		 ns1.dotserv.com
ns1.dotserv.com		 AS21060 Atea A/S
AS21060 Atea A/S
ns1.dotserv.net 178.20.217.29
2a01:7cc0:101:ffff::52		 ns1.dotserv.net
ns2.dotserv.com		 AS21060 Atea A/S
AS21060 Atea A/S
ns2.dotserv.com 193.180.214.21 — AS44803 Webdock.io ApS
ns2.dotserv.net 162.19.249.51
2001:41d0:701:1100::c89e		 ns2.dotserv.net
ns2.dotserv.net		 AS16276 OVH SAS
AS16276 OVH SAS
🌍 A Records1 records   48ms
IPTTLPTRASNISP / OrgCIDRCountryCity
178.20.216.97 — s0.enavn.dk AS21060 Atea A/S 178.20.216.0/23 🇩🇰 Denmark —
📧 MX Records1 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mail.optom.dk 178.20.216.97
2a01:7cc0:101:ffff::1:12		 s0.enavn.dk
—		 AS21060 Atea A/S
AS21060 Atea A/S
🔷 AAAA Records (IPv6)1 records   41ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:7cc0:101:ffff::1:12 — — AS21060 Atea A/S 2a01:7cc0:100:0:0:0:0:0/40 🇩🇰 Denmark —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   149ms
TXT Record
v=spf1 include:_spf.protection.outlook.com -all
✉️ SPF
PolicyRecord (optom.dk)
-all (hard fail) v=spf1 include:_spf.protection.outlook.com -all
📨 DMARC
PolicyRecord (_dmarc.optom.dk)
p=reject v=DMARC1; p=reject;
📬 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)
🔐 DNSSEC152ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer
🏷️ SOA46ms
FieldValue
Serial2020032503
Primary NS (MNAME)ns1.dotserv.com
Responsible (RNAME)hostmaster@dotserv.com
Refresh3600s
Retry7200s
Expire1209600s
Minimum (neg-cache TTL)900s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
49ms
A
48ms
MX
42ms
AAAA
41ms
TXT
149ms
CAA
45ms
HTTPS
36ms
TLSA
215ms
SOA
46ms
MTA-STS
121ms
DNSSEC
152ms
SRV
0ms
Total
1411ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 16:56:19 793ms 4 NS 1 A 1 MX 🔓 Insecure View
2026-06-27 16:37:57 895ms 4 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 14:40:49 1411ms 4 NS 1 A 1 MX 🔓 Insecure View
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