seitz.dk
📜 Historical scan 2026-06-20 15:07:56  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   94ms
NameserverIP addressesPTRASN / ISP
root-dns.netcup.net 2a03:4000:0:1::e1e1
46.38.225.225		 root-dns.netcup.net
root-dns.netcup.net		 AS197540 netcup GmbH
AS197540 netcup GmbH
second-dns.netcup.net 2a03:4000:2:24b::c7c7
37.221.199.199		 second-dns.netcup.net
second-dns.netcup.net		 AS197540 netcup GmbH
AS197540 netcup GmbH
third-dns.netcup.net 188.68.63.68
2a03:4001:0:106::3f44		 third-dns.netcup.net
third-dns.netcup.net		 AS197540 netcup GmbH
AS197540 netcup GmbH
🌍 A Records1 records   135ms
IPTTLPTRASNISP / OrgCIDRCountryCity
152.53.125.183 60s v220250223038311687.nicesrv.de AS197540 netcup GmbH 152.53.112.0/20 🇩🇪 Germany Nuremberg
📧 MX Records1 records   93ms
PriorityTTLMail ServerIP addressesPTRASN
10 60s tls.jakobsack.de 152.53.125.183
2a0a:4cc0:c0:5239::1337		 v220250223038311687.nicesrv.de
jakobsack.de		 AS197540 netcup GmbH
AS197540 netcup GmbH
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverseitz.dk → 152.53.125.183
🔶 Autoconfigseitz.dk → 152.53.125.183
🔷 AAAA Records (IPv6)1 records   137ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a0a:4cc0:c0:5239::1337 60s jakobsack.de AS197540 netcup GmbH 2a0a:4cc0:c0:0:0:0:0:0/43 🇩🇪 Germany Nuremberg
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records2 records   164ms
ServicePriorityWeightPortTarget
_imap._tcp 0 1 143 seitz.dk
_imaps._tcp 0 1 993 seitz.dk
📝 TXT Records1 records   386ms
TXT Record
v=spf1 +mx include:authsmtp.com ra=postmaster -all
✉️ SPF
PolicyRecord (seitz.dk)
-all (hard fail) v=spf1 +mx include:authsmtp.com ra=postmaster -all
📨 DMARC
PolicyRecord (_dmarc.seitz.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:dmarc@server.jakobsack.de; ruf=mailto:dmarc@server.jakobsack.de
📬 MTA-STS
✗ No MTA-STS policy — SMTP TLS not enforced
📈 TLSRPT
StatusReport address (rua)
✓ Enabled mailto:tls@server.jakobsack.de
📜 CAA Records
✗ No CAA records — any CA may issue certificates
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC264ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA147ms
FieldValue
Serial2025101227
Primary NS (MNAME)root-dns.netcup.net
Responsible (RNAME)dnsadmin@netcup.net
Refresh28800s
Retry7200s
Expire1209600s
Minimum (neg-cache TTL)60s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
94ms
A
135ms
MX
93ms
AAAA
137ms
TXT
386ms
CAA
136ms
HTTPS
136ms
TLSA
257ms
SOA
147ms
MTA-STS
90ms
DNSSEC
264ms
SRV
164ms
Total
1532ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 23:34:30 11262ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-08-26 10:38:03 3018ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-20 15:07:56 1532ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-18 06:37:51 2511ms 3 NS 1 A 1 MX ⚠️ Bogus View
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