arst.dk
Last scanned: 2026-07-02 00:04:55  ·  1266ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   133ms
NameserverIP addressesPTRASN / ISP
helium.ns.hetzner.de 193.47.99.5
2001:67c:192c::add:5		 helium.ns.hetzner.de
helium.ns.hetzner.de		 AS12337 noris network AG
AS12337 noris network AG
hydrogen.ns.hetzner.com 213.133.100.98
2a01:4f8:0:1::add:1098		 hydrogen.ns.hetzner.com
hydrogen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
oxygen.ns.hetzner.com 2a01:4f8:0:1::add:2992
88.198.229.192		 oxygen.ns.hetzner.com
oxygen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
🌍 A Records1 records   100ms
IPTTLPTRASNISP / OrgCIDRCountryCity
49.13.83.139 3600s epik.arst.dk AS24940 Hetzner Online GmbH 49.12.0.0/15 🇩🇪 Germany Falkenstein
📧 MX Records3 records   53ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mxext1.mailbox.org 2001:67c:2050:104:0:1:25:1
80.241.60.212		 mx1.mailbox.org
mx1.mailbox.org		 AS199118 Heinlein-Support GmbH
AS199118 Heinlein-Support GmbH
10 3600s mxext2.mailbox.org 2001:67c:2050:104:0:2:25:1
80.241.60.215		 mx2.mailbox.org
mx2.mailbox.org		 AS199118 Heinlein-Support GmbH
AS199118 Heinlein-Support GmbH
20 3600s mxext3.mailbox.org 2001:67c:2050:104:0:3:25:1
80.241.60.216		 mx3.mailbox.org
mx3.mailbox.org		 AS199118 Heinlein-Support GmbH
AS199118 Heinlein-Support GmbH
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   380ms
TXT Record
google-site-verification=c5XTk_p5hRBhNWP8dkKKgLOW4gsWjCleDbbpNH2eHfo
v=spf1 include:mailbox.org ~all
✉️ SPF
PolicyRecord (arst.dk)
~all (soft fail) v=spf1 include:mailbox.org ~all
📨 DMARC
PolicyRecord (_dmarc.arst.dk)
p=quarantine v=DMARC1; p=quarantine; rua=mailto:postmaster@arst.dk; ruf=mailto:postmaster@arst.dk;
📬 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 / DANE9 records   121ms
Service / OwnerTypeCert association
SMTP _25._tcp.mxext1.mailbox.org DANE-EE · SPKI · SHA-256 4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext1.mailbox.org DANE-EE · SPKI · SHA-256 996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext1.mailbox.org DANE-EE · SPKI · SHA-256 E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext2.mailbox.org DANE-EE · SPKI · SHA-256 E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext2.mailbox.org DANE-EE · SPKI · SHA-256 996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext2.mailbox.org DANE-EE · SPKI · SHA-256 4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext3.mailbox.org DANE-EE · SPKI · SHA-256 996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext3.mailbox.org DANE-EE · SPKI · SHA-256 E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext3.mailbox.org DANE-EE · SPKI · SHA-256 4758AF6F02DFB5DC8795FA402E77A8A0…
🔐 DNSSEC121ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA52ms
FieldValue
Serial2026040102
Primary NS (MNAME)hydrogen.ns.hetzner.com
Responsible (RNAME)dns@hetzner.com
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
133ms
A
100ms
MX
53ms
AAAA
53ms
TXT
380ms
CAA
52ms
HTTPS
63ms
TLSA
121ms
SOA
52ms
MTA-STS
61ms
DNSSEC
121ms
SRV
108ms
Total
1266ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-02 00:04:55 1266ms 3 NS 1 A 3 MX 🔓 Insecure View
2026-06-16 13:41:38 1061ms 3 NS 1 A 3 MX 🔓 Insecure View
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