sulf.dk
Last scanned: 2026-07-26 03:34:33  ·  2624ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   42ms
NameserverIP addressesPTRASN / ISP
ns3.nordicway.dk 2a01:4f8:c2c:d3c0::1
78.47.45.64		 ns3.nordicway.dk
ns3.nordicway.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns4.nordicway.dk 2a01:4f8:c010:24a2::1
78.47.56.84		 ns4.nordicway.dk
ns4.nordicway.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
🌍 A Records1 records   48ms
IPTTLPTRASNISP / OrgCIDRCountryCity
148.251.244.167 3600s cp06.nordicway.dk AS24940 Hetzner Online GmbH 148.251.0.0/16 🇩🇪 Germany Falkenstein
📧 MX Records1 records   48ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s sulf.dk 148.251.244.167
2a01:4f8:192:810d::2		 cp06.nordicway.dk
cp06.nordicway.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
🔷 AAAA Records (IPv6)1 records   43ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:4f8:192:810d::2 3600s cp06.nordicway.dk AS24940 Hetzner Online GmbH 2a01:4f8:0:0:0:0:0:0/31 🇩🇪 Germany Falkenstein
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   293ms
TXT Record
v=spf1 +a +mx +ip4:148.251.244.167 include:relay.mailchannels.net ~all
✉️ SPF
PolicyRecord (sulf.dk)
~all (soft fail) v=spf1 +a +mx +ip4:148.251.244.167 include:relay.mailchannels.net ~all
📨 DMARC
PolicyRecord (_dmarc.sulf.dk)
p=none (monitor only) v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400
📬 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
🔏 ACME Challenge
TypeNameValue
TXT _acme-challenge.sulf.dk J3uNGJXS2PKdBwLMvMnQYdmxIiuZzo0m-gJkaFT9JI0
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC2045ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026072501
Primary NS (MNAME)ns3.nordicway.dk
Responsible (RNAME)server@nordicway.dk
Refresh3600s
Retry1800s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
42ms
A
48ms
MX
48ms
AAAA
43ms
TXT
293ms
CAA
48ms
HTTPS
64ms
TLSA
72ms
SOA
0ms
MTA-STS
76ms
DNSSEC
2045ms
SRV
71ms
Total
2624ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-26 03:34:33 2624ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-07-25 03:22:12 1041ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-07-24 02:00:44 1092ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-24 20:55:59 727ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-23 07:19:18 765ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 12:09:33 950ms 2 NS 1 A 1 MX 🔓 Insecure View
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