dhskolen.dk
Last scanned: 2026-08-26 14:37:45  ·  888ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   49ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S
🌍 A Records1 records   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
20.105.224.40 3600s — AS8075 Microsoft Corporation 20.64.0.0/10 🇳🇱 The Netherlands Amsterdam
📧 MX Records1 records   89ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔶 Autoconfigmaildiscover.unoeuro.com → 94.231.108.222
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   93ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 10 443 maildiscover.unoeuro.com
📝 TXT Records2 records   219ms
TXT Record
v=spf1 include:spf.simply.com -all
v=spf1 ip4:37.128.220.210 include:include:spf.unoeuro.com ~all
✉️ SPF
⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)
PolicyRecord (dhskolen.dk)
-all (hard fail) v=spf1 include:spf.simply.com -all
~all (soft fail) v=spf1 ip4:37.128.220.210 include:include:spf.unoeuro.com ~all
📨 DMARC
PolicyRecord (_dmarc.dhskolen.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.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 / DANE2 records   62ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
🔐 DNSSEC131ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026042302
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
49ms
A
40ms
MX
89ms
AAAA
89ms
TXT
219ms
CAA
56ms
HTTPS
65ms
TLSA
62ms
SOA
0ms
MTA-STS
109ms
DNSSEC
131ms
SRV
93ms
Total
888ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 14:37:45 888ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-22 13:44:11 4679ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 19:48:34 562ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 04:27:23 738ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 02:40:57 587ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 02:40:13 589ms 2 NS 1 A 1 MX 🔒 Secure View
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