room4u.dk
Last scanned: 2026-08-21 16:19:45  ·  5658ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   401ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S
🌍 A Records1 records   313ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.8.38.12 3600s — AS48854 team.blue Denmark A/S 193.8.38.0/24 🇩🇰 Denmark —
📧 MX Records2 records   258ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx1.onlinemail.io 185.21.42.12 mx1.onlinemail.io AS48854 team.blue Denmark A/S
10 3600s mx2.onlinemail.io 46.36.208.16 mx2.onlinemail.io AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig193.8.38.12
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   1173ms
TXT Record
v=spf1 a include:spf.curanet.dk include:spf.simply.com -all
✉️ SPF
PolicyRecord (room4u.dk)
-all (hard fail) v=spf1 a include:spf.curanet.dk include:spf.simply.com -all
📨 DMARC
PolicyRecord (_dmarc.room4u.dk)
p=none (monitor only) v=DMARC1 p=none
📬 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)
🔐 DNSSEC801ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082102
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
401ms
A
313ms
MX
258ms
AAAA
254ms
TXT
1173ms
CAA
228ms
HTTPS
281ms
TLSA
393ms
SOA
0ms
MTA-STS
638ms
DNSSEC
801ms
SRV
449ms
Total
5658ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-21 16:19:45 5658ms 4 NS 1 A 2 MX 🔒 Secure View
2026-07-02 18:50:00 633ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-27 05:01:41 706ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-26 14:48:14 622ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-24 04:05:44 1640ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-20 11:56:24 1373ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-18 06:36:23 1137ms 4 NS 1 A 2 MX ⚠️ Bogus View
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