underhill.cz - robtex.com
underhill.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:5340:0:3805::21🇨🇿 CSC2a01:5340::/29 | ||||||
| PTR | web01.npx.cz | ||||||
| A | 91.205.40.21🇨🇿 CSC91.205.40.0/24 | ||||||
| NS | ns01.npx.cz ⭐ | ||||||
| A | 2a01:5340:0:3805::10🇨🇿 CSC2a01:5340::/29 | ||||||
| PTR | ns01.npx.cz | ||||||
| A | 91.205.40.10🇨🇿 CSC91.205.40.0/24 | ||||||
| PTR | ns01.npx.cz | ||||||
| NS | ns02.nipax.cz | ||||||
| A | 2a01:5340:0:3805::17🇨🇿 CSC2a01:5340::/29 | ||||||
| PTR | ns02.nipax.cz | ||||||
| A | 91.205.40.17🇨🇿 CSC91.205.40.0/24 | ||||||
| PTR | ns02.npx.cz | ||||||
| NS | ns03.nipax.net | ||||||
| A | 2a02:a48:f000:dada::f004🇨🇿 PROZETA-NET2a02:a48:f000::/36 PROZETA-RS-NET6 | ||||||
| PTR | ns03.nipax.net | ||||||
| A | 95.173.215.69🇨🇿 PROZETA-NET95.173.214.0/23 | ||||||
| PTR | ns03.nipax.net | ||||||
| MX | mail.npx.cz ⭐ | ||||||
| A | 91.205.40.16🇨🇿 CSC91.205.40.0/24 | ||||||
| PTR | mail.npx.cz | ||||||
| A | 91.205.40.20🇨🇿 CSC91.205.40.0/24 | ||||||
| PTR | mail.npx.cz | ||||||
| TXT | v=spf1 mx include:npx.cz ~all | ||||||
| SOA | ns01.npx.czhostmaster@nipax.cz 2025-09-03 #1 | ||||||
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=1786663040 | ||||||
Same first word
underhill.ca |
underhill.com |
underhill.dance |
underhill.cz |
underhill.nyc |
underhill.us |
underhill.com.au |
underhill.cc |
underhill.mobi |
DNS History
12 records (6 active, 6 former)
○NSnpx.prozeta.net2015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
○NSns.nipax.cz2015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
○NSns.npx.cz2015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
●NSns01.npx.cz2026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
●NSns02.nipax.cz2026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
●NSns03.nipax.net2026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
●MXmail.npx.cz2026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
○MXsmtp.npx.cz2015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
●A2a01:5340:0:3805::212026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
○A2a02:a48:f000:dada::f0052015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
●A91.205.40.212026-06-13 → 2026-08-13 · 3 obs
● 2026-06-13 09:34:32
● 2026-08-13 23:48:20
○A95.173.215.722015-07-10 → 2017-01-26 · 4 obs
● 2017-01-26 16:01:20
○ 2026-06-13 09:34:32
○ 2026-08-13 23:48:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| underhill.cz | ns01.npx.cz, ns02.nipax.cz, ns03.nipax.net | 4 records |
✅ Authoritative Response
Server:95.173.215.69
NS records: ns01.npx.cz, ns02.nipax.cz, ns03.nipax.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for underhill.cz (unsigned zone)
⏱️ Timing
Total: 1050ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.205.40.21 |
| AAAA | 1 | 2a01:5340:0:3805::21 |
| NS | 3 | ns03.nipax.net, ns02.nipax.cz... |
| MX | 1 | mail.npx.cz (pri: 10) |
| TXT | 1 | v=spf1 mx include:npx.cz ~all |
| SOA | 1 | ns01.npx.cz hostmaster.nipax.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns01.npx.cz, ns02.nipax.cz, ns01.npx.cz...)
Analysis
IP Addresses
underhill.cz has two IP addresses: 91.205.40.21 and 2a01:5340:0:3805::21
Additional host names — comphelp.sk, littlebeing.org, polykon.cz and two others — share IP numbers with underhill.cz.
Name Servers
underhill.cz is delegated to three name servers: ns02.nipax.cz, ns01.npx.cz and ns03.nipax.net.
At least some of underhill.cz's name servers are shared with other domains, for example uniepacientu.cz, zamekradic.cz, tonej.cz and two more.
It is common for these name servers to be used in conjunction with the name servers ns.nipax.cz, ns.npx.cz and ns2.nipax.cz.
ns02.nipax.cz, ns01.npx.cz and ns03.nipax.net each resolve to two IP addresses: ns02.nipax.cz resolves to 91.205.40.17 and 2a01:5340:0:3805::17; ns01.npx.cz resolves to 91.205.40.10 and 2a01:5340:0:3805::10; ns03.nipax.net resolves to 95.173.215.69 and 2a02:a48:f000:dada::f004.
Mail Servers
underhill.cz has one mail server: mail.npx.cz.
underhill.cz shares the same mail server setup as other domains, including moodoo.eu, 205gti.org, moodoo.cz and two others.
mail.npx.cz directs to two IP numbers, 91.205.40.16 and 91.205.40.20.