rekenber.dk

📜 Historical scan 2026-10-04 15:24:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rekenber.dk is a .dk domain served by 3 nameservers (ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu). It was registered on 16 June 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.9.175.163 is hosted by WebSupport s.r.o. (AS51013) in Slovakia. Mail is handled by mx10.active24.cz, mx20.active24.cz. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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#

3 records 56ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.websupport.cz	2a10:bbc0::11 45.10.97.11	ns1.websupport.eu ns1.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.
ns2.websupport.cz	185.71.159.12 2a02:250:3::12	ns2.websupport.eu ns2.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.
ns3.websupport.eu	2a10:bbc0::13 45.10.97.13	ns3.websupport.eu ns3.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.

🌍 A Records#

1 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
37.9.175.163	600s	ing.r3.websupport.sk	AS51013	WebSupport s.r.o.	37.9.168.0/21	🇸🇰 Slovakia	—

📧 MX Records#

2 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx10.active24.cz	2a00:4b40:aaaa:2101:45:13:137:85 2a00:4b40:aaaa:2101:45:13:137:86 45.13.137.85 45.13.137.86	m1-u6-mx.active24.cz m1-u7-mx.active24.cz m1-u6-mx.active24.cz m1-u7-mx.active24.cz	AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o.
100	600s	mx20.active24.cz	2a00:4b40:aaaa:2101:45:13:137:85 2a00:4b40:aaaa:2101:45:13:137:86 45.13.137.85 45.13.137.86	m1-u6-mx.active24.cz m1-u7-mx.active24.cz m1-u6-mx.active24.cz m1-u7-mx.active24.cz	AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	web.prod.bts.websupport.sk → 37.9.169.171
🔶 Autoconfig	web.prod.bts.websupport.sk → 37.9.169.172

🔷 AAAA Records (IPv6)#

1 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a00:4b40:aaaa:2005::5	600s	—	AS51013	WebSupport s.r.o.	2a00:4b40:0:0:0:0:0:0/32	🇸🇰 Slovakia	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 490ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	web.prod.bts.websupport.sk

📝 TXT Records#

2 records 319ms

TXT Record
spf2.0/pra a mx include:_sid.m1.websupport.sk ?all
v=spf1 a mx include:_spf.m1.websupport.sk ?all

✉️ SPF#

Policy	Record (rekenber.dk)
?all (neutral)	v=spf1 a mx include:_spf.m1.websupport.sk ?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 2026-10-17 04:30:05

www	37.9.175.163 2a00:4b40:aaaa:2005::5 (AS51013) (address records, no CNAME)
www vs bare domain	Same network rekenber.dk: 37.9.175.163 2a00:4b40:aaaa:2005::5 (AS51013) www.rekenber.dk: 37.9.175.163 2a00:4b40:aaaa:2005::5 (AS51013)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 0 iterations · 8-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#

64ms

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

🏷️ SOA#

59ms

Field	Value
Serial	1718369914
Primary NS (MNAME)	ns1.websupport.cz
Responsible (RNAME)	admin@websupport.cz
Refresh	7200s
Retry	2048s
Expire	1048576s
Minimum (neg-cache TTL)	2560s

📋 Registration#

WHOIS fetched 2026-10-21 07:56:30

Field	Value
Registrar	ASCIO TECHNOLOGIES, CORP. DANMARK - FILIAL AF ASCIO TECHNOLOGIES, CORP. CANADA
Registered	2024-06-16
Expires	2027-06-15 (236d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

56ms

46ms

50ms

AAAA

46ms

TXT

319ms

CAA

57ms

HTTPS

47ms

TLSA

550ms

SOA

59ms

MTA-STS

71ms

DNSSEC

64ms

SRV

490ms

Total

1475ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 15:27:44	4786ms	3 NS 1 A 2 MX	🔒 Secure
2026-10-04 15:24:26 shown	1475ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-12 01:54:55	1370ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-26 01:32:50	1033ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-12 08:00:03	6086ms	3 NS 1 A 2 MX	🔒 Secure
2026-07-17 07:29:11	10529ms	3 NS 1 A 2 MX	🔒 Secure
2026-07-16 07:03:22	1342ms	3 NS 1 A 2 MX	🔒 Secure
2026-06-28 05:30:34	1045ms	3 NS 1 A 2 MX	🔒 Secure
2026-06-21 05:56:02	1688ms	3 NS 1 A 2 MX	🔒 Secure
2026-06-19 09:15:36	3086ms	3 NS 1 A 2 MX	🔒 Secure
2026-06-17 14:42:33	2196ms	3 NS 1 A 2 MX	🔒 Secure