trefo.dk
Last scanned: 2026-08-28 00:37:08  ·  1128ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   52ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S
🌍 A Records1 records   59ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.163.97.44 3600s — AS43167 Fynske Medier P/S 193.163.96.0/23 🇩🇰 Denmark Odense
📧 MX Records1 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s trefo-dk.mail.protection.outlook.com — — —
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 40.104.116.8
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   190ms
TXT Record
MS=ms64581930
v=spf1 include:spf.protection.outlook.com ip4:193.163.96.23 ip4:193.163.97.21 ip4:193.163.97.22 -all
✉️ SPF
PolicyRecord (trefo.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com ip4:193.163.96.23 ip4:193.163.97.21 ip4:193.163.97.22 -all
📨 DMARC
PolicyRecord (_dmarc.trefo.dk)
p=reject v=DMARC1; p=reject; rua=mailto:66f14a574745c@dmarc-dk.centerasecurity.com
📬 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)
🔐 DNSSEC101ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2025052101
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
52ms
A
59ms
MX
42ms
AAAA
71ms
TXT
190ms
CAA
41ms
HTTPS
45ms
TLSA
348ms
SOA
0ms
MTA-STS
98ms
DNSSEC
101ms
SRV
77ms
Total
1128ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 00:37:08 1128ms 4 NS 1 A 1 MX 🔒 Secure View
2026-08-27 04:18:46 1209ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 12:13:22 1181ms 4 NS 1 A 1 MX 🔒 Secure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone