strefa.dk DNS records

🖥️ Nameservers3 records 68ms

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 Records1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.243.48.60	1800s	hosting.bsshop.cz	AS43541	VSHosting s.r.o.	46.243.48.0/23	🇨🇿 Czechia	—

📧 MX Records2 records 62ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	0d750fdc8eb90964.mx2.emailprofi.seznam.cz	2a02:598:2::1146 77.75.77.146	wildcard.mx2.emailprofi.seznam.cz wildcard.mx2.emailprofi.seznam.cz	AS43037 Seznam.cz, a.s. AS43037 Seznam.cz, a.s.
20	600s	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 → 37.9.169.172
🔶 Autoconfig	web.prod.bts.websupport.sk → 37.9.169.172

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 128ms

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

📝 TXT Records1 records 259ms

TXT Record
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

🔗 TLSA / DANE

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

🔐 DNSSEC79ms

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

🏷️ SOA0ms

Field	Value
Serial	1785769918
Primary NS (MNAME)	ns1.websupport.cz
Responsible (RNAME)	admin@websupport.cz
Refresh	7200s
Retry	2048s
Expire	1048576s
Minimum (neg-cache TTL)	2560s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

68ms

A

52ms

MX

62ms

AAAA

59ms

TXT

259ms

CAA

67ms

HTTPS

67ms

TLSA

409ms

SOA

0ms

MTA-STS

83ms

DNSSEC

79ms

SRV

128ms

Total

1904ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 03:57:11	3073ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-28 05:47:49	1224ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-05 22:24:35	1904ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-09 05:33:08	3031ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 19:44:24	3235ms	3 NS 1 A 2 MX	🔒 Secure	View