concreteseal.dk
Last scanned: 2026-08-15 10:06:26  ·  32814ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   8040ms
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   8057ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.21.41.85 3600s linux34.curanet.dk AS48854 team.blue Denmark A/S 185.21.40.0/22 🇩🇰 Denmark —
📧 MX Records2 records   8063ms
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)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   8177ms
TXT Record
v=spf1 include:spf.onlinemail.io -all
✉️ SPF
PolicyRecord (concreteseal.dk)
-all (hard fail) v=spf1 include:spf.onlinemail.io -all
📨 DMARC
✗ No DMARC record — mail spoofing not restricted
📬 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)
🔐 DNSSEC8073ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA8045ms
FieldValue
Serial2023121801
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
8040ms
A
8057ms
MX
8063ms
AAAA
8055ms
TXT
8177ms
CAA
8062ms
HTTPS
8058ms
TLSA
8109ms
SOA
8045ms
MTA-STS
8081ms
DNSSEC
8073ms
SRV
8146ms
Total
32814ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-15 10:06:26 32814ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-01 13:06:16 538ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-19 16:50:00 576ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-17 00:13:22 65535ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-16 22:02:55 411ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-16 22:02:19 1666ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-16 22:00:49 2565ms 2 NS 1 A 2 MX 🔒 Secure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone