caltech.org - dns.ninja
caltech.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 52.26.125.194🇺🇸 Amazon52.24.0.0/14 EC2 PDX prefix | ||||||
| PTR | ec2-52-26-125-194.us-west-2.compute.amazonaws.com | ||||||
| NS | ns0071.secondary.cloudflare.com ⭐ | ||||||
| A | 2606:4700:51::a29f:2048🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns0071.secondary.cloudflare.com | ||||||
| A | 162.159.32.72Cloudflare162.159.32.0/23 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns0071.secondary.cloudflare.com | ||||||
| NS | ns0145.secondary.cloudflare.com | ||||||
| A | 2606:4700:59::a29f:2114🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns0145.secondary.cloudflare.com | ||||||
| A | 162.159.33.20Cloudflare162.159.32.0/23 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns0145.secondary.cloudflare.com | ||||||
| SOA | ns0071.secondary.cloudflare.comhostmaster@caltech.edu 2009-11-18 #96 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1786132639 | ||||||
Same first word
Similar names
DNS History
8 records (3 active, 5 former)
○NSmercutio.caltech.edu2015-08-17 → 2016-07-21 · 4 obs
● 2016-07-21 18:26:54
○ 2026-02-20 01:45:48
○ 2026-08-07 20:28:08
○NSmercutio.ni.caltech.edu2015-08-17 → 2016-07-21 · 4 obs
● 2016-07-21 18:26:54
○ 2026-02-20 01:45:48
○ 2026-08-07 20:28:08
●NSns0071.secondary.cloudflare.com2026-02-20 → 2026-08-07 · 3 obs
● 2026-02-20 01:45:48
● 2026-08-07 20:28:08
●NSns0145.secondary.cloudflare.com2026-02-20 → 2026-08-07 · 3 obs
● 2026-02-20 01:45:48
● 2026-08-07 20:28:08
○NStepid.ni.caltech.edu2015-08-17 → 2016-07-21 · 4 obs
● 2016-07-21 18:26:54
○ 2026-02-20 01:45:48
○ 2026-08-07 20:28:08
○NStybalt.caltech.edu2015-08-17 → 2016-07-21 · 4 obs
● 2016-07-21 18:26:54
○ 2026-02-20 01:45:48
○ 2026-08-07 20:28:08
○A131.215.220.42015-08-17 → 2016-07-21 · 4 obs
● 2016-07-21 18:26:54
○ 2026-02-20 01:45:48
○ 2026-08-07 20:28:08
●A52.26.125.1942026-02-20 → 2026-08-07 · 3 obs
● 2026-02-20 01:45:48
● 2026-08-07 20:28:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| caltech.org | ns0071.secondary.cloudflare.com, ns0145.secondary.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.33.20
NS records: ns0071.secondary.cloudflare.com, ns0145.secondary.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for caltech.org (unsigned zone)
⏱️ Timing
Total: 623ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.26.125.194 |
| NS | 2 | ns0071.secondary.cloudflare.com, ns0145.secondary.cloudflare.com |
| SOA | 1 | ns0071.secondary.cloudflare.com hostmast |
Analysis
IP Addresses
caltech.org resolves to one IP address: 52.26.125.194.
spamtrap.caltech.edu, ecstem.org, vision.caltech.edu and two other host names share IP numbers with caltech.org.
Name Servers
caltech.org is served by two delegated name servers, ns0071.secondary.cloudflare.com and ns0145.secondary.cloudflare.com.
caltech.org uses the same name servers as several other domains — among them 19.12.192.in-addr.arpa, 208.41.192.in-addr.arpa, caltech.info and two more.
At least some of caltech.org's name servers are shared with other domains, for example fincentric.app, psmregistration.com, parkview.com and two more.
These name servers tend to co-occur with ns0248.secondary.cloudflare.com, iblx.wallst.com, lldcfwibexternal.parkview.com and 7 other name servers in the same DNS delegations.
Each of the two host names carries two IP addresses: ns0071.secondary.cloudflare.com points to 162.159.32.72 and 2606:4700:51::a29f:2048, and ns0145.secondary.cloudflare.com points to 162.159.33.20 and 2606:4700:59::a29f:2114.