citytelecom.dk
Last scanned: 2026-08-27 07:34:35  ·  9562ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   46ms
NameserverIP addressesPTRASN / ISP
ns1.jth.net 212.237.178.27
2a06:4005:8003::2		 smsnu.dk
mail6.jth.net		 AS204151 EWII Bredbaand A/S
AS204151 EWII Bredbaand A/S
ns4.jth.net 2a06:4004:b026::1
87.104.241.106		 ns4.jth.net
ns4.jth.net		 AS204151 EWII Bredbaand A/S
AS204151 EWII Bredbaand A/S
🌍 A Records1 records   47ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.51.76.57 14400s — AS215052 Din Server Group ApS 185.51.76.0/24 🇩🇰 Denmark Albertslund
📧 MX Records1 records   38ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mail.citytelecom.dk 185.51.76.57 — AS215052 Din Server Group ApS
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover185.51.76.57
🔶 Autoconfig185.51.76.57
🔷 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
PolicyRecord (_dmarc.citytelecom.dk)
p=reject v=DMARC1; p=reject; rua=mailto:postmaster@larting.dk; ruf=mailto:dal@larting.dk
📬 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)
🔐 DNSSEC9088ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2004091996
Primary NS (MNAME)ns1.jth.net
Responsible (RNAME)hostmaster@jth.net
Refresh86400s
Retry3600s
Expire2419200s
Minimum (neg-cache TTL)1s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
46ms
A
47ms
MX
38ms
AAAA
51ms
TXT
493ms
CAA
57ms
HTTPS
47ms
TLSA
71ms
SOA
0ms
MTA-STS
104ms
DNSSEC
9088ms
SRV
115ms
Total
9562ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 07:34:35 9562ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 15:58:12 630ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-16 21:10:51 1580ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-16 21:08:17 26950ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-16 21:07:39 467ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-16 21:01:14 1629ms 2 NS 1 A 1 MX 🔓 Insecure View
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