firstbackup.dk
Last scanned: 2026-08-27 05:39:58  ·  604ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   36ms
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   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
94.18.239.5 3600s — AS31027 GlobalConnect A/S 94.18.0.0/16 🇩🇰 Denmark Hvidovre
📧 MX Records4 records   41ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx.spamfilter-online.com 94.18.239.24 — AS31027 GlobalConnect A/S
20 3600s mx2.spamfilter-online.com 94.18.239.24 — AS31027 GlobalConnect A/S
30 3600s mx3.spamfilter-online.com 94.18.239.24 — AS31027 GlobalConnect A/S
40 3600s mx4.spamfilter-online.com 94.18.239.24 — AS31027 GlobalConnect A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook-online.dk → 94.18.239.4
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   147ms
TXT Record
v=spf1 include:spf.outlook-online.dk -all
✉️ SPF
PolicyRecord (firstbackup.dk)
-all (hard fail) v=spf1 include:spf.outlook-online.dk -all
📨 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC91ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026040401
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
36ms
A
40ms
MX
41ms
AAAA
34ms
TXT
147ms
CAA
39ms
HTTPS
49ms
TLSA
96ms
SOA
0ms
MTA-STS
53ms
DNSSEC
91ms
SRV
73ms
Total
604ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 05:39:58 604ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-27 17:52:17 1443ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-26 05:54:46 1337ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-22 23:34:26 749ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-17 09:50:35 1009ms 2 NS 1 A 4 MX 🔒 Secure View
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