checkbit.dk
📜 Historical scan 2026-06-16 20:26:06  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   38ms
NameserverIP addressesPTRASN / ISP
ns01.one.com — — —
ns02.one.com — — —
🌍 A Records1 records   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
91.100.105.5 — 91.100.105.5.generic-hostname.arrownet.dk AS15516 DKTV A/S 91.100.0.0/15 🇩🇰 Denmark Ballerup Municipality
📧 MX Records1 records   40ms
PriorityTTLMail ServerIP addressesPTRASN
10 — checkbit-dk.mail.protection.outlook.com 52.101.68.10
52.101.68.5
52.101.73.2
52.101.73.28		 mail-dbbpr03cu00102.inbound.protection.outlook.com
mail-du2pr03cu00105.inbound.protection.outlook.com
mail-as9pr07cu00302.inbound.protection.outlook.com
mail-am7pr05cu00204.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   200ms
TXT Record
MS=ms28167286
v=spf1 ip4:91.100.105.5 include:spf.protection.outlook.com -all
✉️ SPF
PolicyRecord (checkbit.dk)
-all (hard fail) v=spf1 ip4:91.100.105.5 include:spf.protection.outlook.com -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)
🔐 DNSSEC102ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA37ms
FieldValue
Serial2026061201
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
38ms
A
33ms
MX
40ms
AAAA
40ms
TXT
200ms
CAA
26ms
HTTPS
35ms
TLSA
125ms
SOA
37ms
MTA-STS
136ms
DNSSEC
102ms
SRV
0ms
Total
685ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 13:37:19 1323ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-25 06:34:17 3351ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-12 23:03:56 4772ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-19 00:34:25 3131ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-14 10:10:18 9214ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-02 00:21:18 968ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 20:26:06 685ms 2 NS 1 A 1 MX 🔒 Secure View
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