strontium90.dk
Last scanned: 2026-08-14 04:49:08  ·  4578ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   226ms
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 Records
🌍
No A records found
📧 MX Records2 records   236ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s 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 43200s 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   526ms
TXT Record
protonmail-verification=6861feb8c3553cd21a252abb6cdf4f7d5c51b6cf
v=spf1 include:_spf.protonmail.ch mx ~all
✉️ SPF
PolicyRecord (strontium90.dk)
~all (soft fail) v=spf1 include:_spf.protonmail.ch mx ~all
📨 DMARC
PolicyRecord (_dmarc.strontium90.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   738ms
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…
🔐 DNSSEC395ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2026081301
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
226ms
A
226ms
MX
236ms
AAAA
268ms
TXT
526ms
CAA
262ms
HTTPS
231ms
TLSA
738ms
SOA
0ms
MTA-STS
331ms
DNSSEC
395ms
SRV
310ms
Total
4578ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-14 04:49:08 4578ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-18 19:28:10 3506ms 2 NS 0 A 2 MX 🔒 Secure View
2026-07-17 17:19:58 1038ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-29 07:35:28 632ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-19 20:12:57 574ms 2 NS 0 A 2 MX 🔒 Secure View
2026-06-18 07:46:51 678ms 2 NS 0 A 2 MX 🔒 Secure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone