mx2.construct.cz - dns.ninja
mx2.construct.cz
| DNSSEC | β οΈ Not signed | ||||||
| A | 81.0.254.169π¨πΏ CASABLANCA-AS81.0.254.0/23 Casablanca INT | ||||||
| PTR | unassigned-81-0-254-169.casablanca.cz | ||||||
construct.cz
| DNSSEC | β οΈ Not signed | ||||||
| A | 2606:4700:3030::6815:94fπΊπΈ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 2606:4700:3030::ac43:bd2eπΊπΈ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 104.21.9.79Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 172.67.189.46πΊπΈ Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| NS | kara.ns.cloudflare.com β | ||||||
| NS | lars.ns.cloudflare.com | ||||||
| MX | mx2.construct.cz β | ||||||
| MX | mail.comacomp.cz(300) | ||||||
| MX | mx.construct.cz(500) | ||||||
| MX | mail.construct.cz(10000) | ||||||
| TXT | v=spf1 ip4:85.163.104.2 ip4:83.167.250.161 ip4:84.16.96.6 ip4:84.21.115.50 ip... | ||||||
| HTTPS | HTTP/3, HTTP/2 β hints match | ||||||
| IPv4 hints | 104.21.9.79, 172.67.189.46 | ||||||
| IPv6 hints | 2606:4700:3030::6815:94f, 2606:4700:3030::ac43:bd2e | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=132, name=cloudflare-ech.com | ||||||
| SOA | kara.ns.cloudflare.comdns@cloudflare.com serial=2407997766 | ||||||
WOT: SAFE (76/100)
MX for
Same first word
Similar names
DNS History
1 record (1 active, 0 former)
βA81.0.254.1692015-08-05 β 2026-07-14 Β· 2 obs
β 2015-08-05 18:42:16
β 2026-07-14 01:55:20
β 2026-07-14 01:55:20
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| construct.cz | kara.ns.cloudflare.com, lars.ns.cloudflare.com | - |
β Authoritative Response
Server:172.64.33.195
NS records: kara.ns.cloudflare.com, lars.ns.cloudflare.com
π DNSSEC Status
β Bogus (DNSSEC validation failed)
Validation error at cz: Error: DNS query timeout: 194.0.12.1 for DNSKEY cz
β±οΈ Timing
Total: 3194ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.0.254.169 |
Analysis
Mail Server Role
mx2.construct.cz serves as a mail server for construct.cz.
mail.comacomp.cz, mail.construct.cz and mx.construct.cz tend to be used as mail servers in tandem with mx2.construct.cz.
IP Addresses
mx2.construct.cz points to a single IP number: 81.0.254.169.
Additional host names β mx.bujak.cz, mx.krul.cz, mx.pensioneva.cz and two others β share IP numbers with mx2.construct.cz.