matematikfokus.dk
Last scanned: 2026-09-01 17:21:08  ·  467ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   40ms
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   35ms
IPTTLPTRASNISP / OrgCIDRCountryCity
75.2.60.5 3600s acd89244c803f7181.awsglobalaccelerator.com AS16509 Amazon.com, Inc. 75.2.0.0/17 🇺🇸 United States —
📧 MX Records1 records   33ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
🔷 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC81ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082401
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
40ms
A
35ms
MX
33ms
AAAA
43ms
TXT
162ms
CAA
39ms
HTTPS
64ms
TLSA
58ms
SOA
0ms
MTA-STS
57ms
DNSSEC
81ms
SRV
137ms
Total
467ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-01 17:21:08 467ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-27 09:10:18 524ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-26 16:07:17 443ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-21 18:38:28 1017ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-03 05:04:45 4536ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-25 09:44:02 682ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 05:36:41 471ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-22 14:35:04 632ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-18 02:04:55 2335ms 2 NS 1 A 0 MX 🔒 Secure View
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