castrool.com - robtex.com
castrool.com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2a00:4b40:aaaa:2011::5🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 37.9.175.211🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24 | ||||||
| NS | ns1.websupport.cz ⭐ | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.cz | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS2a02:250:3::/48 | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS185.71.159.0/24 | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.eu | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns3.websupport.eu | ||||||
| MX | mx10.active24.cz ⭐ | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:85🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 45.13.137.85🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | mx10.active24.cz | ||||||
| MX | mx20.active24.cz(100) | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:86🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 45.13.137.86🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | mx20.active24.cz | ||||||
| TXT | v=spf1 a mx include:_spf.websupport.cz -all | ||||||
| SOA | ns1.websupport.czadmin@websupport.cz serial=1767788115 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774369342 | ||||||
Subdomains
nullmx.castrool.com |
Same first word
castrool.com |
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1.websupport.cz2026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●NSns2.websupport.cz2026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●NSns3.websupport.eu2026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●MXmx10.active24.cz2026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●MXmx20.active24.cz2026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●A2a00:4b40:aaaa:2011::52026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
●A37.9.175.2112026-02-22 → 2026-03-24 · 2 obs
● 2026-03-24 16:32:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| castrool.com | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.11
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 469ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.211 |
| AAAA | 1 | 2a00:4b40:aaaa:2011::5 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mx10.active24.cz (pri: 10), mx20.active24.cz (pri: 100) |
| TXT | 1 | v=spf1 a mx include:_spf.websupport.cz - |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
castrool.com is the parent of nullmx.castrool.com.
IP Addresses
castrool.com resolves to two IP numbers: 2a00:4b40:aaaa:2011::5 and 37.9.175.211.
Other host names, for instance spirit.tos-znojmo.cz, zako.biz, nervia.cz, ipereal.cz and lp-praha.cz share IP numbers with castrool.com.
Name Servers
castrool.com delegates to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
castrool.com shares some name servers with other domains, for example energy-broker.sk, prague-trip.cz, exceltown.com, medesa.eu and netcraft.nl.
These name servers are commonly used alongside ns3.websupport.cz, ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Host names with two IP numbers:
ns1.websupport.cz: 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.cz: 2a02:250:3::12 and 185.71.159.12
ns3.websupport.eu: 2a10:bbc0::13 and 45.10.97.13
Mail Servers
castrool.com is served by two mail servers: mx10.active24.cz and mx20.active24.cz.
castrool.com shares the mail server setup with other domains, for example agren.cz, reinsberg.net, rex.eu, creative-media.cz and egocafe.cz.
castrool.com shares at least some mail servers with other domains, for example babickarstvo.sk.
Host names with two IP numbers:
mx10.active24.cz points to: 2a00:4b40:aaaa:2101:45:13:137:85 and 45.13.137.85; mx20.active24.cz points to: 2a00:4b40:aaaa:2101:45:13:137:86 and 45.13.137.86.