21castle.com - robtex.com
21castle.com
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=1774464122 | ||||||
Same first word
21castle.com |
DNS History
10 records (9 active, 1 former)
●NSns43.domaincontrol.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●NSns44.domaincontrol.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●MXalt1.aspmx.l.google.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●MXalt2.aspmx.l.google.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●MXaspmx.l.google.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●MXaspmx2.googlemail.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●MXaspmx3.googlemail.com2016-06-19 → 2026-03-25 · 2 obs
● 2026-03-25 18:57:36
●A13.248.243.52026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 18:57:34
● 2026-03-25 18:57:36
○A166.62.6.782016-06-19 → 2020-01-07 · 4 obs
● 2020-01-07 15:53:20
○ 2026-03-25 18:57:34
○ 2026-03-25 18:57:36
●A76.223.105.2302026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 18:57:34
● 2026-03-25 18:57:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 21castle.com | ns43.domaincontrol.com, ns44.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.69.22
NS records: ns43.domaincontrol.com, ns44.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21castle.com (unsigned zone)
⏱️ Timing
Total: 151ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.105.230, 13.248.243.5 |
| NS | 2 | ns43.domaincontrol.com, ns44.domaincontrol.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | v=spf1 include:_spf.google.com ~all |
| SOA | 1 | ns43.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns43.domaincontrol.com, ns43.domaincontrol.com, ns44.domaincontrol.com...)
Analysis
IP Addresses
21castle.com resolves to two IPs: 13.248.243.5 and 76.223.105.230.
other host names for instance talentspringboard.com, kammela.com, kidzaic.com, rbcomics.com and thebargaindeal.com share IP numbers with 21castle.com.
Name Servers
21castle.com is delegated to two name servers: ns43.domaincontrol.com and ns44.domaincontrol.com.
21castle.com shares the same name server setup as other domains, for example amsterdamfashioncenter.com, heritageforestapts.com, conferencesbymonticello.com, gilesward.com and vishnuopticals.in.
21castle.com at least partially shares its name servers with other domains, for instance wernervisual.com.
Host names with two IP numbers:
ns43.domaincontrol.com points to 2603:5:2152::16 and 97.74.101.22
ns44.domaincontrol.com points to 2603:5:2252::16 and 173.201.69.22
Mail Servers
21castle.com is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
21castle.com shares mail servers with other domains at least partially, including ns500742.ns500671.ns500742.ns500742.ns500671.ns500742.ns500671.ns500705.ns500649.ns500653.ns500131.lustychickser.com, adfr.it, hatchdistilling.com, netties.com and ns500693.ns500699.ns500693.ns500699.ns500693.ns500693.ns500699.ns500693.ns500693.ns500693.ns500588.ns500588.ns500588.ns500683.ns500588.ns500632.dtrkdll.com.
these mail servers are often used with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Hosts with two IP numbers:
aspmx2.googlemail.com points to 2a00:1450:4025:402::1b and 142.250.102.26.
aspmx3.googlemail.com points to 2a00:1450:4013:c1e::1a and 192.178.213.27.
aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.27.
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 172.253.116.27.