21run.dk

Records from scan: 2026-09-25 14:59:53  ·  1369ms total  ·  last checked 2026-10-17 12:42 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

21run.dk is a .dk domain served by 2 nameservers (ns1.whirlwind.nl, ns2.whirlwind.nl). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.17.9.85 is hosted by Previder B.V. (AS39591) in The Netherlands. Mail is handled by mail.21run.dk, fallback1.whirlwind.nl and 1 more. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   38ms
NameserverIP addressesPTRASN / ISP
ns1.whirlwind.nl 2a02:2870:c002:2291:46:17:15:71
46.17.15.71		 ns1.whirlwind.nl
ns1.whirlwind.nl		 AS60781 LeaseWeb Netherlands B.V.
AS60781 LeaseWeb Netherlands B.V.
ns2.whirlwind.nl 46.17.9.71 ns2.whirlwind.nl AS39591 Previder B.V.

🌍 A Records#

1 records   41ms
IPTTLPTRASNISP / OrgCIDRCountryCity
46.17.9.85 14400s s2.whirlwind.nl AS39591 Previder B.V. 46.17.8.0/22 🇳🇱 The Netherlands Veldhoven

📧 MX Records#

3 records   53ms
PriorityTTLMail ServerIP addressesPTRASN
10 14400s mail.21run.dk 46.17.9.85 s2.whirlwind.nl AS39591 Previder B.V.
20 14400s fallback1.whirlwind.nl 2a02:2870:c002:2291:46:17:15:72
46.17.15.72		 fallback1.whirlwind.nl
fallback1.whirlwind.nl		 AS60781 LeaseWeb Netherlands B.V.
AS60781 LeaseWeb Netherlands B.V.
30 14400s fallback2.whirlwind.nl 46.17.9.72 fallback2.whirlwind.nl AS39591 Previder B.V.

🔷 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#

checked 2026-10-08 18:14:29
www46.17.9.85 (AS39591) (address records, no CNAME)
www vs bare domainSame network
21run.dk: 46.17.9.85 (AS39591)
www.21run.dk: 46.17.9.85 (AS39591)
WildcardNo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

72ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2020111001
Primary NS (MNAME)ns1.whirlwind.nl
Responsible (RNAME)kristof@all4running.be
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)10800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup
📋 WHOIS#

⏱️ Lookup Timing#

NS
38ms
A
41ms
MX
53ms
AAAA
61ms
TXT
258ms
CAA
37ms
HTTPS
54ms
TLSA
317ms
SOA
0ms
MTA-STS
63ms
DNSSEC
72ms
SRV
72ms
Total
1369ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-25 14:59:53 shown 1369ms 2 NS 1 A 3 MX 🔓 Insecure
2026-07-24 06:44:51 22193ms 2 NS 1 A 3 MX 🔓 Insecure
2026-07-02 01:23:37 1480ms 2 NS 1 A 3 MX 🔓 Insecure
2026-06-16 12:43:45 914ms 2 NS 1 A 3 MX 🔓 Insecure
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