rc21.dk

📜 Historical scan 2026-07-02 16:25:02 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rc21.dk is a .dk domain served by 2 nameservers (ns.wannafind.dk, ns2.wannafind.dk). It was registered on 27 July 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.109.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.wannafind.dk, mx2.wannafind.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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.wannafind.dk	185.25.141.6 2a02:2339:4006:103:1c:3f6d:daba:dee	ns1.wannafind.dk ns1.wannafind.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.wannafind.dk	2a02:2339:1:104::daba:daa 91.197.248.69	ns2.wannafind.dk ns2.wannafind.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.109.17	3600s	linux9.wannafind.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

2 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.wannafind.dk	94.231.108.77	mx1.wannafind.dk	AS48854 team.blue Denmark A/S
20	3600s	mx2.wannafind.dk	46.36.209.3	mx2.wannafind.dk	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.wannafind.dk → 94.231.108.98
🔶 Autoconfig	autoconfig-mf.wannafind.dk → 94.231.108.78

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 131ms

TXT Record
v=spf1 include:spf.wannafind.dk ?all

✉️ SPF#

Policy	Record (rc21.dk)
?all (neutral)	v=spf1 include:spf.wannafind.dk ?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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 18:18:03

www	94.231.109.17 (AS48854) (address records, no CNAME)
www vs bare domain	Same network rc21.dk: 94.231.109.17 (AS48854) www.rc21.dk: 94.231.109.17 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

134ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

29ms

Field	Value
Serial	2021111701
Primary NS (MNAME)	ns.wannafind.dk
Responsible (RNAME)	hostmaster@wannafind.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-07 15:27:07

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-07-27
Expires	2028-07-31 (652d)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

42ms

45ms

AAAA

35ms

TXT

131ms

CAA

45ms

HTTPS

33ms

TLSA

46ms

SOA

29ms

MTA-STS

52ms

DNSSEC

134ms

SRV

49ms

Total

554ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 11:31:11	538ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-30 08:13:55	394ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-25 08:20:34	512ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-13 17:18:45	479ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-02 16:25:02 shown	554ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-23 07:57:57	3309ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-22 15:00:48	1141ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 17:42:07	543ms	2 NS 1 A 2 MX	🔒 Secure