strefa.dk

📜 Historical scan 2026-06-17 19:44:24 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

strefa.dk is a .dk domain served by 3 nameservers (ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu). It was registered on 9 December 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.9.175.165 is hosted by WebSupport s.r.o. (AS51013) in Slovakia. Mail is handled by 0d750fdc8eb90964.mx2.emailprofi.seznam.cz, 0d750fdc8eb90964.mx1.emailprofi.seznam.cz. The zone is DNSSEC-signed and validates, publishes a 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 82ms

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 81ms

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

📧 MX Records#

2 records 71ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	0d750fdc8eb90964.mx2.emailprofi.seznam.cz	2a02:598:2::1146 77.75.77.146	— wildcard.mx2.emailprofi.seznam.cz	AS43037 Seznam.cz, a.s. AS43037 Seznam.cz, a.s.
20	—	0d750fdc8eb90964.mx1.emailprofi.seznam.cz	2a02:598:2::1056 77.75.77.56	wildcard.mx1.emailprofi.seznam.cz wildcard.mx1.emailprofi.seznam.cz	AS43037 Seznam.cz, a.s. AS43037 Seznam.cz, a.s.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	web.prod.bts.websupport.sk → 37.9.169.173
🔶 Autoconfig	web.prod.bts.websupport.sk → 37.9.169.171

🔷 AAAA Records (IPv6)#

1 records 80ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a00:4b40:aaaa:2005::6	—	—	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 236ms

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

📝 TXT Records#

2 records 516ms

TXT Record
spf2.0/pra a mx include:_sid.websupport.cz ?all
v=spf1 include:spf.seznam.cz include:spf1.supportbox.cz include:bsadmin.cz mx ~all

✉️ SPF#

Policy	Record (strefa.dk)
~all (soft fail)	v=spf1 include:spf.seznam.cz include:spf1.supportbox.cz include:bsadmin.cz mx ~all

📨 DMARC#

Policy	Record (_dmarc.strefa.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=r; aspf=r;

📬 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 17:42:38

www CNAME	bsshop.eu.cdn.cloudflare.net (all on cloudflare.net) → 104.20.38.224 172.66.164.209 2606:4700:10::6814:26e0 2606:4700:10::ac42:a4d1 (AS13335)
www vs bare domain	Different networks strefa.dk: 46.243.48.60 (AS43541) www.strefa.dk: 104.20.38.224 172.66.164.209 2606:4700:10::6814:26e0 2606:4700:10::ac42:a4d1 (AS13335) (all like this)
Wildcard	No
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: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

164ms

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

🏷️ SOA#

80ms

Field	Value
Serial	1778152926
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 2026-10-09 17:54:16

Field	Value
Registrar	ASCIO TECHNOLOGIES, CORP. DANMARK - FILIAL AF ASCIO TECHNOLOGIES, CORP. CANADA
Registered	2024-12-09
Expires	2026-12-08 (50d)

📋 WHOIS#

⏱️ Lookup Timing#

82ms

81ms

71ms

AAAA

80ms

TXT

516ms

CAA

80ms

HTTPS

70ms

TLSA

257ms

SOA

80ms

MTA-STS

110ms

DNSSEC

164ms

SRV

236ms

Total

3235ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 17:42:38	929ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-27 13:18:24	1206ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-27 05:58:37	3100ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-26 05:39:14	3355ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-23 00:53:45	1632ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-05 22:45:18	2636ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-30 03:57:11	3073ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-28 05:47:49	1224ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-05 22:24:35	1904ms	3 NS 1 A 2 MX	🔒 Secure
2026-07-09 05:33:08	3031ms	3 NS 1 A 2 MX	🔒 Secure
2026-06-17 19:44:24 shown	3235ms	3 NS 1 A 2 MX	🔒 Secure