a773.dk
Last scanned: 2026-08-20 14:37:14  ·  1851ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   64ms
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   124ms
IPTTLPTRASNISP / OrgCIDRCountryCity
83.93.185.27 600s 83-93-185-27-dynamic.dk.customer.tdc.net AS3292 TDC Holding A/S 83.93.176.0/20 🇩🇰 Denmark Valby
📧 MX Records1 records   72ms
PriorityTTLMail ServerIP addressesPTRASN
0 600s mail.tutanota.de 185.205.69.211
185.205.69.213
185.205.69.214		 mail.w11.tutanota.de
mail.w13.tutanota.de
mail.w14.tutanota.de		 AS210909 Tutao GmbH
AS210909 Tutao GmbH
AS210909 Tutao GmbH
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover83.93.185.27
🔶 Autoconfig83.93.185.27
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   280ms
TXT Record
t-verify=3496692a7852f3bbb78daedd1753048d
v=spf1 include:spf.tutanota.de -all
✉️ SPF
PolicyRecord (a773.dk)
-all (hard fail) v=spf1 include:spf.tutanota.de -all
📨 DMARC
PolicyRecord (_dmarc.a773.dk)
p=quarantine v=DMARC1; p=quarantine; adkim=s
📬 MTA-STS439ms
CheckResult
Status🔒 Enforce
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modeenforce
Policy ID20190723
max_age86400s
Policy MXmail.tutanota.de
📈 TLSRPT
✗ No TLSRPT record — no SMTP TLS failure reporting
📜 CAA Records
✗ No CAA records — any CA may issue certificates
🔗 TLSA / DANE1 records   97ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.tutanota.de DANE-EE · Full cert · SHA-256 D141F8F3A4AAC2E4D2677AAFCC723D8E…
🔐 DNSSEC231ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082001
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
64ms
A
124ms
MX
72ms
AAAA
96ms
TXT
280ms
CAA
115ms
HTTPS
103ms
TLSA
97ms
SOA
0ms
MTA-STS
439ms
DNSSEC
231ms
SRV
172ms
Total
1851ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-20 14:37:14 1851ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-18 13:32:46 3179ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-14 05:40:32 4703ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-21 21:22:09 536ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-16 12:14:50 594ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-03 20:04:42 578ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-22 02:45:40 2386ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-21 21:12:04 1150ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-20 08:43:20 456ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 12:46:32 463ms 2 NS 1 A 0 MX 🔒 Secure View
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