grading.dk
Last scanned: 2026-08-26 08:59:45  ·  952ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   58ms
NameserverIP addressesPTRASN / ISP
ns1.curanet.dk 185.25.141.12
2a02:2339:4006:108::123		 ns1.curanet.dk
ns1.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.curanet.dk 2a02:2339:1:10f::123:123
91.197.248.75		 ns2.curanet.dk
ns2.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
🌍 A Records1 records   43ms
IPTTLPTRASNISP / OrgCIDRCountryCity
213.184.84.11 60s nlsh06.shared-infra.net AS59795 PerfGrid 213.184.84.0/23 🇳🇱 The Netherlands —
📧 MX Records2 records   58ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx1.onlinemail.io 185.21.42.12 mx1.onlinemail.io AS48854 team.blue Denmark A/S
20 3600s mx2.onlinemail.io 46.36.208.16 mx2.onlinemail.io AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfigautoconfig-mf.onlinemail.io → 185.21.40.62
🔷 AAAA Records (IPv6)1 records   38ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a09:3a00:4011::1 60s — AS59795 PerfGrid 2a09:3a00:4000:0:0:0:0:0/40 🇳🇱 The Netherlands —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   247ms
TXT Record
brevo-code:e6760f9636740825cf6cd492236ad966
v=spf1 include:spf.onlinemail.io include:spf-record.net -all
✉️ SPF
PolicyRecord (grading.dk)
-all (hard fail) v=spf1 include:spf.onlinemail.io include:spf-record.net -all
📨 DMARC
PolicyRecord (_dmarc.grading.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.grading.dk 40247cee-d2dc-48cd-a2f7-8fe689e69bad.auth.acme-challenge.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC176ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2025052702
Primary NS (MNAME)ns1.curanet.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
58ms
A
43ms
MX
58ms
AAAA
38ms
TXT
247ms
CAA
49ms
HTTPS
33ms
TLSA
301ms
SOA
0ms
MTA-STS
162ms
DNSSEC
176ms
SRV
70ms
Total
952ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 08:59:45 952ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-25 13:05:57 718ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-17 10:00:44 1117ms 2 NS 1 A 2 MX 🔒 Secure View
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