developer.cz - dns.ninja
developer.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 194.212.89.122🇨🇿 TMOBILE-CZ194.212.0.0/16 T-Mobile Czech Republic a.s. | ||||||
| NS | ns.sprinx.cz ⭐ | ||||||
| A | 194.212.89.20🇨🇿 TMOBILE-CZ194.212.0.0/16 T-Mobile Czech Republic a.s. | ||||||
| PTR | ns.sprinx.cz | ||||||
| NS | smudla.svamberk.cz | ||||||
| A | 80.188.171.249🇨🇿 O2-CZECH-REPUBLIC80.188.128.0/17 CZ.CZNET | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2a00:1450:4009:c19::1b🇬🇧 Google2a00:1450:4009::/48 | ||||||
| PTR | yulhrp-in-f27.1e100.net | ||||||
| A | 192.178.223.27🇺🇸 Google192.178.223.0/24 | ||||||
| PTR | yulhrs-in-f27.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(20) | ||||||
| A | 2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48 | ||||||
| PTR | dj-in-f26.1e100.net | ||||||
| A | 172.253.116.27🇺🇸 Google172.253.116.0/24 | ||||||
| PTR | dj-in-f27.1e100.net | ||||||
| MX | aspmx2.googlemail.com(30) | ||||||
| A | 2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48 | ||||||
| A | 108.177.123.26🇺🇸 Google108.177.123.0/24 | ||||||
| PTR | lcscld-in-f26.1e100.net | ||||||
| SOA | ns.sprinx.czpostmaster@sprinx.cz 1998-01-29 #43 | ||||||
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=1780546636 | ||||||
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSsmudla.svamberk.cz2015-06-26 → 2026-06-04 · 2 obs
● 2026-06-04 04:49:54
●MXalt2.aspmx.l.google.com2015-06-26 → 2026-06-04 · 2 obs
● 2026-06-04 04:49:54
●MXaspmx.l.google.com2015-06-26 → 2026-06-04 · 2 obs
● 2026-06-04 04:49:54
●MXaspmx2.googlemail.com2015-06-26 → 2026-06-04 · 2 obs
● 2026-06-04 04:49:54
●A194.212.89.1222026-03-02 → 2026-06-04 · 3 obs
● 2026-03-02 22:11:10
● 2026-06-04 04:49:54
○A194.212.89.862015-06-26 → 2017-10-23 · 4 obs
● 2017-10-23 23:58:32
○ 2026-03-02 22:11:10
○ 2026-06-04 04:49:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| developer.cz | smudla.svamberk.cz, ns.sprinx.cz | 1 record |
✅ Authoritative Response
Server:80.188.171.249
NS records: smudla.svamberk.cz, ns.sprinx.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for developer.cz (unsigned zone)
⏱️ Timing
Total: 4094ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 194.212.89.122 |
| NS | 2 | ns.sprinx.cz, smudla.svamberk.cz |
| MX | 3 | alt2.aspmx.l.google.com (pri: 20), aspmx2.googlemail.com (pri: 30)... |
| SOA | 1 | ns.sprinx.cz postmaster.sprinx.cz |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns.sprinx.cz)
Analysis
IP Addresses
developer.cz resolves to one IP address: 194.212.89.122.
sprinx.net, ferovapujcka.cz, sprinx.eu and two other host names share IP numbers with developer.cz.
Name Servers
DNS delegation for developer.cz points to two name servers: ns.sprinx.cz and smudla.svamberk.cz.
developer.cz uses the same name servers as several other domains — among them noga.cz, tvujmobil.cz, touchcue.com and two more.
The name servers of developer.cz overlap at least partially with those of other domains — among them prokes-rubber.sk, conciergemedicine.cz, bonusia.eu and two more.
These name servers commonly co-occur with the name servers ns2.livebox.cz, ns.sprinx.com, ns.sprinx.net and ns2.contactel.cz.
Both ns.sprinx.cz and smudla.svamberk.cz have a single IP address each — ns.sprinx.cz resolves to 194.212.89.20 while smudla.svamberk.cz resolves to 80.188.171.249.
Mail Servers
Mail for developer.cz is routed through three mail servers — aspmx2.googlemail.com, aspmx.l.google.com and alt2.aspmx.l.google.com.
developer.cz has at least partial mail server overlap with other domains such as ns500759.ns500759.ns500759.ns500735.ns500698.ns500735.ns500736.ns500735.ns500698.ns500698.ns500708.ns500576.ns500698.ns500576.ns500652.ns500652.ns500619.trackreceptor.com, ns500731.ns500742.ns500731.ns500731.ns500754.ns500731.ns500742.ns500704.ns500704.ns500704.ns500705.ns500153.tenderladiesbz.com, ns500742.ns500742.ns500742.ns500671.ns500671.ns500671.ns500688.ns500671.ns500688.ns500671.ns500705.ns500671.ns500291.ns500291.ns500291.ns500131.lustychickser.com and two more.
These mail servers often appear together with alt1.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and three other mail servers.
Three hostnames — aspmx2.googlemail.com, aspmx.l.google.com and alt2.aspmx.l.google.com — each have two IP addresses: aspmx2.googlemail.com has 108.177.123.26 and 2800:3f0:4003:c0f::1a, aspmx.l.google.com has 192.178.223.27 and 2a00:1450:4009:c19::1b, and alt2.aspmx.l.google.com has 172.253.116.27 and 2a00:1450:400b:c02::1a.