rs4.dk
Last scanned: 2026-07-29 09:22:33  ·  4720ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   33ms
NameserverIP addressesPTRASN / ISP
ns1.dns.services 195.242.131.6
2001:67c:564:ffff::11		 ns1.dns.services
ns1.dns.services		 AS62121 Christian Ebsen ApS
AS62121 Christian Ebsen ApS
ns2.dns.services 2a00:1b18:2:3:3::2
62.69.152.37		 ns2.dns.services
ns2.dns.services		 AS47527 DLX A/S
AS47527 DLX A/S
🌍 A Records1 records   28ms
IPTTLPTRASNISP / OrgCIDRCountryCity
81.7.163.195 3600s — AS47292 Sentia Denmark A/S 81.7.160.0/21 🇩🇰 Denmark —
📧 MX Records1 records   15ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.rs4.dk 81.7.132.82 safeweb.dk AS47292 Sentia Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverrs4.dk → 81.7.163.195
🔶 Autoconfigrs4.dk → 81.7.163.195
🔷 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.rs4.dk rs4.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC82ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA26ms
FieldValue
Serial2022072802
Primary NS (MNAME)ns1.dns.services
Responsible (RNAME)hostmaster@comasys.dk
Refresh10800s
Retry3600s
Expire2419000s
Minimum (neg-cache TTL)43200s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
33ms
A
28ms
MX
15ms
AAAA
30ms
TXT
105ms
CAA
33ms
HTTPS
33ms
TLSA
76ms
SOA
26ms
MTA-STS
42ms
DNSSEC
82ms
SRV
35ms
Total
4720ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-29 09:22:33 4720ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-07-02 10:04:15 774ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-18 04:54:18 3746ms 2 NS 1 A 1 MX 🔓 Insecure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone