erf01.dk
Last scanned: 2026-06-23 13:13:55  ·  729ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   71ms
NameserverIP addressesPTRASN / ISP
ns1-09.azure-dns.com 13.107.236.9
2603:1061:0:700::9		 ns1-09.azure-dns.com
ns1-09.azure-dns.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns2-09.azure-dns.net 150.171.21.9
2620:1ec:8ec:700::9		 ns2-09.azure-dns.net
ns2-09.azure-dns.net		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns3-09.azure-dns.org 204.14.183.9
2a01:111:4000:700::9		 ns3-09.azure-dns.org
ns3-09.azure-dns.org		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns4-09.azure-dns.info 208.84.5.9
2620:1ec:bda:700::9		 ns4-09.azure-dns.info
ns4-09.azure-dns.info		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🌍 A Records
🌍
No A records found
📧 MX Records1 records   65ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s .  Null MX — domain accepts no email (RFC 7505)
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   230ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (erf01.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.erf01.dk)
p=reject v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:phishing@dnb.no
📬 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 / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC88ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA66ms
FieldValue
Serial1
Primary NS (MNAME)ns1-09.azure-dns.com
Responsible (RNAME)azuredns-hostmaster@microsoft.com
Refresh3600s
Retry300s
Expire2419200s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
71ms
A
75ms
MX
65ms
AAAA
42ms
TXT
230ms
CAA
70ms
HTTPS
35ms
TLSA
70ms
SOA
66ms
MTA-STS
33ms
DNSSEC
88ms
SRV
116ms
Total
729ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-23 13:13:55 729ms 4 NS 0 A 1 MX 🔓 Insecure View
2026-06-19 14:03:48 2552ms 4 NS 0 A 1 MX 🔓 Insecure View
2026-06-17 08:29:11 4650ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-17 08:09:45 959ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-17 08:07:25 325ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-17 08:00:31 401ms 4 NS 0 A 0 MX 🔓 Insecure View
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