firstclass.cz - robtex.com
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firstclass.cz
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ 🔒 | ||||||
| NS | b.ns.nic.cz 🔒 | ||||||
| NS | c.ns.nic.cz 🔒 | ||||||
| NS | d.ns.nic.cz 🔒 | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1770371237 | ||||||
rank #2188 in the tld
Same first word
Similar names
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz | - |
| firstclass.cz | joaquin.ns.cloudflare.com, luciane.ns.cloudflare.com | - |
✅ Authoritative Response
Server: 162.159.38.120
NS records: joaquin.ns.cloudflare.com, luciane.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstclass.cz (unsigned zone)
⏱️ Timing
Total: 788ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 104.26.8.126, 172.67.72.143... |
| AAAA | 3 | 2606:4700:20::ac43:488f, 2606:4700:20::681a:87e... |
| NS | 2 | joaquin.ns.cloudflare.com, luciane.ns.cloudflare.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 5 | facebook-domain-verification=geh4ie7mxvx, google-site-verification=-29tvuMlufd7X5B... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | joaquin.ns.cloudflare.com dns.cloudflare |
AI analysis
Six IP numbers are pointed to by firstclass.cz: 2606:4700:20::681a:87e, 2606:4700:20::681a:97e, 2606:4700:20::ac43:488f, 104.26.8.126, 104.26.9.126 and 172.67.72.143.
Other host names, for instance choice.community, uscardforum.com, api.ninjanerd.org, www.uscardforum.com and analytics2.giftly.com share IP numbers with firstclass.cz.
firstclass.cz is delegated to two name servers: joaquin.ns.cloudflare.com and luciane.ns.cloudflare.com.
firstclass.cz uses the same name server setup as other domains, for instance crossbreedholsters.com, income-pemex.com, n8tactical.com, incentivoesporte.com.br and 884944.com.
firstclass.cz shares name servers with other domains at least partially, for instance datasket.com, demystifyingthemystical.com, adata.pro, wiflix-max.cloud and techamelia.com.
these name servers are commonly used together with matteo.ns.cloudflare.com and lady.ns.cloudflare.com.
Host names with six IP numbers: joaquin.ns.cloudflare.com points to 2606:4700:58::a29f:2cdc, 2803:f800:50::6ca2:c3dc, 2a06:98c1:50::ac40:23dc, 108.162.195.220, 162.159.44.220 and 172.64.35.220; luciane.ns.cloudflare.com points to 2606:4700:50::a29f:2678, 2803:f800:50::6ca2:c278, 2a06:98c1:50::ac40:2278, 108.162.194.120, 162.159.38.120 and 172.64.34.120.
firstclass.cz is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
firstclass.cz shares some mail servers with other domains, including sejongsoloists.org, dansvo.com, hallmanor.com, ns500671.ns500754.ns500754.ns500731.ns500671.ns500742.ns500678.ns500671.ns500131.lustychickser.com and ns500765.ns500765.ns500699.ns500699.ns500693.ns500693.ns500699.ns500734.ns500699.ns500632.ns500612.ns500110.dtrkdll.com.
These mail servers are commonly used with aspmx2.googlemail.com and aspmx3.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to 2607:f8b0:4004:c08::1a and 172.253.63.27.
alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1b and 108.177.123.27.
alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1b and 172.253.116.26.
alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.26.
alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1a and 173.194.76.26.