fe-ctf.dk
📜 Historical scan 2026-06-17 09:24:35  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   60ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com — — —
ns2.simply.com — — —
ns3.simply.com — — —
ns4.simply.com — — —
🌍 A Records1 records   61ms
IPTTLPTRASNISP / OrgCIDRCountryCity
34.34.144.240 — 240.144.34.34.bc.googleusercontent.com AS396982 Google LLC 34.32.0.0/11 🇧🇪 Belgium Brussels
📧 MX Records2 records   65ms
PriorityTTLMail ServerIP addressesPTRASN
10 — 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 — 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 Records3 records   173ms
TXT Record
google-site-verification=CIBMdQmBhXhCLo1DRWAfpjVtNJ6DiC63nx7ld5NRZYI
protonmail-verification=d9ab79ccfaf7f1a58a826c2f8abb031527311f9b
v=spf1 include:_spf.protonmail.ch mx ~all
✉️ SPF
PolicyRecord (fe-ctf.dk)
~all (soft fail) v=spf1 include:_spf.protonmail.ch mx ~all
📨 DMARC
PolicyRecord (_dmarc.fe-ctf.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 / DANE4 records   237ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
🔐 DNSSEC2071ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA58ms
FieldValue
Serial2023102408
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
60ms
A
61ms
MX
65ms
AAAA
59ms
TXT
173ms
CAA
59ms
HTTPS
57ms
TLSA
237ms
SOA
58ms
MTA-STS
2082ms
DNSSEC
2071ms
SRV
0ms
Total
3043ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 07:29:15 2585ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-25 02:43:00 896ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-23 03:40:16 982ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-21 05:47:57 1228ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-21 05:14:44 1170ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-19 18:53:53 2710ms 4 NS 1 A 2 MX 🔒 Secure View
2026-06-17 09:24:35 3043ms 4 NS 1 A 2 MX 🔒 Secure View
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