lermester.dk
Last scanned: 2026-08-27 13:34:37  ·  589ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   38ms
NameserverIP addressesPTRASN / ISP
ns1.desec.io 2607:f740:e633:deec::2
45.54.76.1		 ns1.desec.io
ns1.desec.io		 AS63911 NetActuate, Inc
AS63911 NetActuate, Inc
ns2.desec.org 157.53.224.1
2607:f740:e00a:deec::2		 ns2.desec.org
ns2.desec.org		 AS36217 NetActuate, Inc
AS36217 NetActuate, Inc
🌍 A Records
🌍
No A records found
📧 MX Records2 records   32ms
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   164ms
TXT Record
protonmail-verification=b87cddc1822e93b7f896522d173d5b80ce022e1a
v=spf1 include:_spf.protonmail.ch ~all
✉️ SPF
PolicyRecord (lermester.dk)
~all (soft fail) v=spf1 include:_spf.protonmail.ch ~all
📨 DMARC
PolicyRecord (_dmarc.lermester.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   29ms
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…
🔐 DNSSEC113ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2025115265
Primary NS (MNAME)get.desec.io
Responsible (RNAME)get@desec.io
Refresh86400s
Retry3600s
Expire2419200s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
38ms
A
40ms
MX
32ms
AAAA
31ms
TXT
164ms
CAA
46ms
HTTPS
45ms
TLSA
29ms
SOA
0ms
MTA-STS
50ms
DNSSEC
113ms
SRV
47ms
Total
589ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 13:34:37 589ms 2 NS 0 A 2 MX 🔒 Secure View
2026-08-21 00:44:58 25269ms 2 NS 0 A 2 MX 🔒 Secure View
2026-08-15 12:01:49 1270ms 2 NS 0 A 2 MX 🔒 Secure View
2026-08-07 02:48:58 1299ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-30 08:14:37 12244ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-23 17:22:34 1112ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-16 15:28:32 972ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-09 16:29:51 9118ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-06 17:30:04 4710ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-05 06:50:28 1331ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-03 10:59:30 684ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-29 11:16:18 777ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-26 16:45:00 810ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-19 16:22:52 7597ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-17 22:03:21 913ms 2 NS 0 A 2 MX 🔒 Secure View
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