cerebelo.dk
Last scanned: 2026-08-26 20:53:08  ·  933ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   61ms
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   57ms
IPTTLPTRASNISP / OrgCIDRCountryCity
20.107.224.59 600s — AS8075 Microsoft Corporation 20.64.0.0/10 🇮🇪 Ireland Dublin
📧 MX Records2 records   54ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.protonmail.ch 176.119.200.128
185.205.70.128
185.70.42.128		 mail.protonmail.ch
mail.protonmail.ch
mail.protonmail.ch		 AS62371 Proton AG
AS62371 Proton AG
AS62371 Proton AG
20 3600s mailsec.protonmail.ch 176.119.200.129
185.205.70.129
185.70.42.129		 mailsec.protonmail.ch
mailsec.protonmail.ch
mailsec.protonmail.ch		 AS62371 Proton AG
AS62371 Proton AG
AS62371 Proton AG
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   201ms
TXT Record
protonmail-verification=9c545f7200ccafa176101732c54362db4ef9f6f1
v=spf1 include:_spf.protonmail.ch ~all
✉️ SPF
PolicyRecord (cerebelo.dk)
~all (soft fail) v=spf1 include:_spf.protonmail.ch ~all
📨 DMARC
PolicyRecord (_dmarc.cerebelo.dk)
p=quarantine v=DMARC1; p=quarantine
📬 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 / DANE4 records   101ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
🔐 DNSSEC118ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082501
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
61ms
A
57ms
MX
54ms
AAAA
63ms
TXT
201ms
CAA
50ms
HTTPS
61ms
TLSA
101ms
SOA
0ms
MTA-STS
74ms
DNSSEC
118ms
SRV
80ms
Total
933ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 20:53:08 933ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-26 15:23:28 503ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-26 11:05:00 3028ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-27 08:46:43 806ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-25 23:05:43 589ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-16 20:10:32 765ms 2 NS 1 A 2 MX 🔒 Secure View
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