rt49.dk

📜 Historical scan 2026-06-17 22:02:52  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rt49.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 5 September 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.26 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.rt49.dk, backup-mx.zitcom.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   95ms
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 Records#

1 records   122ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.21.40.26 — mail.csnt.dk AS48854 team.blue Denmark A/S 185.21.40.0/22 🇩🇰 Denmark —

📧 MX Records#

2 records   90ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mail.rt49.dk 185.21.40.26 mail.csnt.dk AS48854 team.blue Denmark A/S
20 — backup-mx.zitcom.dk 46.36.212.34
46.36.212.36
46.36.212.37
46.36.212.38
89.188.78.64
89.188.78.65
89.188.78.66
94.231.106.12		 node4.spamfilter.io
node8.spamfilter.io
node6.spamfilter.io
node7.spamfilter.io
node3.spamfilter.io
node9.spamfilter.io
node10.spamfilter.io
node2.spamfilter.io		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover185.21.40.26
🔶 Autoconfig185.21.40.26

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 09:40:23
www185.21.40.26 (AS48854) (address records, no CNAME)
www vs bare domainSame network
rt49.dk: 185.21.40.26 (AS48854)
www.rt49.dk: 185.21.40.26 (AS48854)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

59ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

43ms
FieldValue
Serial2021111801
Primary NS (MNAME)ns1.curanet.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s

📋 Registration#

WHOIS fetched 2026-10-15 16:37:54
FieldValue
RegistrarCURANET A/S
Registered2013-09-05
Expires2027-09-30 (348d)

🔗 Same registrant#

13 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

DomainRegistrar
affaldssortering.dkCURANET A/S
byggeriets-diversitetsdag.dkCURANET A/S
csnt.dkPunktum dk A/S (direct)
directmail.dkCURANET A/S
directmails.dkCURANET A/S
hellclausen.dkCURANET A/S
ingenrotter.dkCURANET A/S
jj-holding.dkCURANET A/S
kastibak.dkCURANET A/S
reklamehus.dkCURANET A/S
reklamehuset.dkCURANET A/S
rhs-smtp.dkCURANET A/S
tonfor-sortering.dkCURANET A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
95ms
A
122ms
MX
90ms
AAAA
35ms
TXT
209ms
CAA
48ms
HTTPS
44ms
TLSA
119ms
SOA
43ms
MTA-STS
45ms
DNSSEC
59ms
SRV
163ms
Total
814ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-27 23:18:37 542ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-21 23:06:56 545ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-27 21:30:55 849ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-24 22:46:56 908ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-24 01:53:17 1099ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-17 22:02:52 shown 814ms 2 NS 1 A 2 MX 🔒 Secure
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