sarfu.dk
Last scanned: 2026-08-28 09:48:27  ·  2840ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers7 records   48ms
NameserverIP addressesPTRASN / ISP
ns1.first-ns.de 213.239.242.238
2a01:4f8:0:a101::a:1		 ns1.first-ns.de
ns1.first-ns.de		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns1.hefu.dk 80.251.205.35 80.251.205.35.bredband.3.dk AS44034 Hi3G Access AB
ns2.hefu.dk 65.21.158.48 saga.hefu.dk AS24940 Hetzner Online GmbH
ns3.hefu.dk 188.34.167.39 hermod.hefu.dk AS24940 Hetzner Online GmbH
ns4.hefu.dk 188.245.64.138 fenris.hefu.dk AS24940 Hetzner Online GmbH
robotns2.second-ns.de 213.133.100.103
2a01:4f8:0:1::5ddc:2		 robotns2.second-ns.de
robotns2.second-ns.de		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
robotns3.second-ns.com 193.47.99.3
2001:67c:192c::add:a3		 robotns3.second-ns.com
robotns3.second-ns.com		 AS12337 noris network AG
AS12337 noris network AG
🌍 A Records1 records   2045ms
IPTTLPTRASNISP / OrgCIDRCountryCity
80.251.205.35 86398s 80.251.205.35.bredband.3.dk AS44034 Hi3G Access AB 80.251.192.0/20 🇸🇪 Sweden Båstad
📧 MX Records4 records   84ms
PriorityTTLMail ServerIP addressesPTRASN
10 172800s mail1.hefu.dk 80.251.205.35 80.251.205.35.bredband.3.dk AS44034 Hi3G Access AB
20 172800s mail2.hefu.dk 80.209.68.68 80.209.68.68.static.fibianet.dk AS44869 FIBIA P/S
30 172800s mail3.hefu.dk 95.209.155.98 95.209.155.98.mobile.3.dk AS44034 Hi3G Access AB
40 172800s odin.hefu.dk 142.132.179.114 odin.hefu.dk AS24940 Hetzner Online GmbH
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   317ms
TXT Record
v=spf1 +mx +a +ip4:80.251.205.35 +a:80.251.205.35.bredband.3.dk +ip4:95.209.155.98 +a:95.209.155.98.mobile.3.dk +a:smtp.3.dk +a:smtp1.tre.se +a:pasmtp.tele.dk +ip4:80.209.68.68 +a:80.209.68.68.static.fibianet.dk ?all
✉️ SPF
PolicyRecord (sarfu.dk)
?all (neutral) v=spf1 +mx +a +ip4:80.251.205.35 +a:80.251.205.35.bredband.3.dk +ip4:95.209.155.98 +a:95.209.155.98.mobile.3.dk +a:smtp.3.dk +a:smtp1.tre.se +a:pasmtp.tele.dk +ip4:80.209.68.68 +a:80.209.68.68.static.fibianet.dk ?all
📨 DMARC
✗ No DMARC record — mail spoofing not restricted
📬 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 / DANE2 records   178ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail1.hefu.dk DANE-EE · Full cert · SHA-256 82DE9E8E4FFC0E0ACF4AF9C680011127…
SMTP _25._tcp.mail2.hefu.dk DANE-EE · Full cert · SHA-256 82DE9E8E4FFC0E0ACF4AF9C680011127…
🔐 DNSSEC129ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2022060801
Primary NS (MNAME)ns1.hefu.dk
Responsible (RNAME)hostmaster@hefu.dk
Refresh14400s
Retry7200s
Expire3600000s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
48ms
A
2045ms
MX
84ms
AAAA
60ms
TXT
317ms
CAA
65ms
HTTPS
74ms
TLSA
178ms
SOA
0ms
MTA-STS
80ms
DNSSEC
129ms
SRV
135ms
Total
2840ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 09:48:27 2840ms 7 NS 1 A 4 MX 🔓 Insecure View
2026-07-02 08:04:11 3560ms 7 NS 1 A 4 MX 🔓 Insecure View
2026-06-24 22:01:41 1801ms 7 NS 1 A 4 MX 🔓 Insecure View
2026-06-17 22:12:40 4018ms 7 NS 1 A 4 MX 🔓 Insecure View
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