feldcode.cz - robtex.com
feldcode.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 46.101.228.87🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean | ||||||
| PTR | alpha.feldcode.cz | ||||||
| NS | ns1.digitalocean.com ⭐ | ||||||
| A | 2606:4700:52::ac40:34d2🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| A | 172.64.52.210🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| NS | ns2.digitalocean.com | ||||||
| A | 2606:4700:5a::ac40:3515🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| A | 172.64.53.21🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| NS | ns3.digitalocean.com | ||||||
| A | 2606:4700:52::ac40:31d1🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| A | 172.64.49.209🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| MX | mail.feldcode.cz ⭐ | ||||||
| A | 46.101.228.87🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean | ||||||
| PTR | alpha.feldcode.cz | ||||||
| TXT | v=spf1 +a +mx +a:alpha.feldcode.cz +a:feldstein.cz -all | ||||||
| SOA | ns1.digitalocean.comhostmaster@feldcode.cz serial=1772517381 | ||||||
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=1776104233 | ||||||
Subdomains
Same first word
feldcode.cz |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.digitalocean.com2026-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 18:55:24
●NSns2.digitalocean.com2026-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 18:55:24
●NSns3.digitalocean.com2026-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 18:55:24
●MXmail.feldcode.cz2026-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 18:55:24
●A46.101.228.872026-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 18:55:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| feldcode.cz | ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com | - |
✅ Authoritative Response
Server:172.64.52.210
NS records: ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for feldcode.cz (unsigned zone)
⏱️ Timing
Total: 851ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.101.228.87 |
| NS | 3 | ns3.digitalocean.com, ns1.digitalocean.com... |
| MX | 1 | mail.feldcode.cz (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:alpha.feldcode.cz +a:fe |
| SOA | 1 | ns1.digitalocean.com hostmaster.feldcode |
Analysis
Hierarchy
feldcode.cz is parent of mail.feldcode.cz and alpha.feldcode.cz.
IP Addresses
feldcode.cz resolves to a single IP address: 46.101.228.87.
Other host names including feldstein.eu, mail.feldstein.cz, mail.feldstein.eu, mail.feldcode.cz and alpha.feldcode.cz share IP numbers with feldcode.cz.
Name Servers
feldcode.cz is delegated to three name servers: ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.
feldcode.cz at least partially shares name servers with other domains, including ashoka.se, 1.0.0.6.e.0.c.0.0.0.0.0.0.0.0.0.0.d.0.0.d.a.c.0.0.8.8.a.4.0.6.2.ip6.arpa, playgroundnews.ca, theplanetshine.com and arkblueprint.com.
These name servers are often used together with ns4.digitalocean.com.
Host names with two IP numbers:
ns1.digitalocean.com points to: 2606:4700:52::ac40:34d2 and 172.64.52.210
ns2.digitalocean.com points to: 2606:4700:5a::ac40:3515 and 172.64.53.21
ns3.digitalocean.com points to: 2606:4700:52::ac40:31d1 and 172.64.49.209
Mail Servers
feldcode.cz is handled by a single mail server, mail.feldcode.cz.
mail.feldcode.cz points to a single IP: 46.101.228.87.