caltechsys.com - robtex.com
caltechsys.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=1771291435 | ||||||
Same first word
caltechsys.com |
Similar names
DNS History
10 records (4 active, 6 former)
●NSdns1.registrar-servers.com2026-03-21 → 2026-03-21 · 3 obs
● 2026-03-21 07:48:26
● 2026-03-21 18:21:02
●NSdns2.registrar-servers.com2026-03-21 → 2026-03-21 · 3 obs
● 2026-03-21 07:48:26
● 2026-03-21 18:21:02
○NSns25.domaincontrol.com2015-08-11 → 2019-01-21 · 4 obs
● 2019-01-21 21:23:34
○ 2026-03-21 07:48:26
○ 2026-03-21 18:21:02
○NSns26.domaincontrol.com2015-08-11 → 2019-01-21 · 4 obs
● 2019-01-21 21:23:34
○ 2026-03-21 07:48:26
○ 2026-03-21 18:21:02
●MXcaltechsys-com.mail.protection.outlook.com2026-03-21 → 2026-03-21 · 3 obs
● 2026-03-21 07:48:26
● 2026-03-21 18:21:02
○MXmailstore1.secureserver.net2015-08-11 → 2017-02-15 · 4 obs
● 2017-02-15 08:13:52
○ 2019-01-21 21:23:34
○ 2026-03-21 18:21:02
○MXsmtp.secureserver.net2015-08-11 → 2017-02-15 · 4 obs
● 2017-02-15 08:13:52
○ 2019-01-21 21:23:34
○ 2026-03-21 18:21:02
○A184.168.27.1162015-08-11 → 2017-02-15 · 4 obs
● 2017-02-15 08:13:52
○ 2019-01-21 21:23:34
○ 2026-03-21 18:21:02
○A68.74.206.2112019-01-21 → 2019-01-21 · 4 obs
● 2019-01-21 21:23:34
○ 2026-03-21 07:48:26
○ 2026-03-21 18:21:02
●A75.56.10.1532026-03-21 → 2026-03-21 · 3 obs
● 2026-03-21 07:48:26
● 2026-03-21 18:21:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net... | - |
| caltechsys.com | dns1.registrar-servers.com, dns2.registrar-servers.com | 4 records |
✅ Authoritative Response
Server: 156.154.132.200
NS records: dns1.registrar-servers.com, dns2.registrar-servers.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for caltechsys.com (unsigned zone)
⏱️ Timing
Total: 1847ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 75.56.10.153 |
| NS | 2 | dns1.registrar-servers.com, dns2.registrar-servers.com |
| MX | 1 | caltechsys-com.mail.protection.outlook.c |
| TXT | 4 | MS=ms43730826, sophos-domain-verification=3fc7497b43f64... |
| SOA | 1 | dns1.registrar-servers.com hostmaster.re |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)
Analysis
IP Addresses
caltechsys.com resolves to a single IP: 75.56.10.153.
Name Servers
caltechsys.com has two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.
caltechsys.com shares the same name server setup as other domains, for example hewodx.com, poly-mer.com, bookablebeds.com, diyknot.com and brandwizard.ai.
caltechsys.com shares some name servers with other domains, for example thepattersonproject.com, 90y.org, nickwurth.com, hortonworks.club and malecky.com.
These name servers are often used together with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.
Host names with two IP numbers:
dns1.registrar-servers.com points to: 2610:a1:1024::200 and 156.154.132.200; dns2.registrar-servers.com points to: 2610:a1:1025::200 and 156.154.133.200.
Mail Servers
caltechsys.com is handled by a single mail server, caltechsys-com.mail.protection.outlook.com.
Host caltechsys-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c801::1, 2a01:111:f403:c803::, 2a01:111:f403:c903::3, 2a01:111:f403:f802::2, 52.101.9.5, 52.101.9.24, 52.101.10.8 and 52.101.194.19.