sentinelgroup.dk
Last scanned: 2026-09-05 01:42:30  ·  1264ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   206ms
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   188ms
IPTTLPTRASNISP / OrgCIDRCountryCity
46.30.211.38 600s domain-parking.one.com AS51468 One.com A/S 46.30.208.0/21 🇩🇰 Denmark Copenhagen
📧 MX Records2 records   177ms
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   580ms
TXT Record
protonmail-verification=bfd4468f35573def31b8f79db07fa8e31fce4dca
v=spf1 include:_spf.protonmail.ch ~all
✉️ SPF
PolicyRecord (sentinelgroup.dk)
~all (soft fail) v=spf1 include:_spf.protonmail.ch ~all
📨 DMARC
PolicyRecord (_dmarc.sentinelgroup.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   59ms
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 76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
🔐 DNSSEC266ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026083101
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
206ms
A
188ms
MX
177ms
AAAA
160ms
TXT
580ms
CAA
190ms
HTTPS
258ms
TLSA
59ms
SOA
0ms
MTA-STS
204ms
DNSSEC
266ms
SRV
441ms
Total
1264ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-05 01:42:30 1264ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-07 15:30:26 4956ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-06 11:12:37 953ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-21 19:03:31 4915ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-02 12:17:34 654ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-18 07:51:16 905ms 2 NS 1 A 2 MX 🔒 Secure View
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