21cscience.org - robtex.com
21cscience.org
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=1773551953 | ||||||
Same first word
21cscience.org |
DNS History
6 records (5 active, 1 former)
●NSdns1.cscdns.net2026-03-22 → 2026-03-23 · 2 obs
● 2026-03-23 13:51:12
●NSdns2.cscdns.net2026-03-22 → 2026-03-23 · 2 obs
● 2026-03-23 13:51:12
●MXcustmx.cscdns.net2026-03-22 → 2026-03-23 · 2 obs
● 2026-03-23 13:51:12
●A165.160.13.202026-03-22 → 2026-03-23 · 3 obs
● 2026-03-22 02:44:00
● 2026-03-23 13:51:12
●A165.160.15.202026-03-22 → 2026-03-23 · 3 obs
● 2026-03-22 02:44:00
● 2026-03-23 13:51:12
○A208.91.197.262015-06-20 → 2018-07-19 · 4 obs
● 2018-07-19 11:21:30
○ 2026-03-22 02:44:00
○ 2026-03-23 13:51:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| 21cscience.org | dns1.cscdns.net, dns2.cscdns.net | - |
✅ Authoritative Response
Server:156.154.131.100
NS records: dns1.cscdns.net, dns2.cscdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21cscience.org (unsigned zone)
⏱️ Timing
Total: 565ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 165.160.15.20, 165.160.13.20 |
| NS | 2 | dns1.cscdns.net, dns2.cscdns.net |
| MX | 1 | custmx.cscdns.net (pri: 10) |
| SOA | 1 | dns1.cscdns.net hostmaster.cscdns.net |
Analysis
IP Addresses
21cscience.org points to two IP numbers: 165.160.13.20 and 165.160.15.20.
Other host names such as becks.com, mytuitionsafe.co, rolexwatchescheap.org, backideen.ch and auchan-direct.com share IPs with 21cscience.org.
Name Servers
Two name servers dns1.cscdns.net and dns2.cscdns.net handle the delegation for 21cscience.org.
21cscience.org shares the same name server setup as other domains, for example www-hartford.com, tournee.ca, westinlakebuenavista.com, sheratonbaypoint.com and k2admin.com.
21cscience.org partially shares name servers with other domains, for example charleshnoski.com and wwwmbnaquantum.net.
These name servers are often used together with ns101.bac.com and ns102.bac.com.
Host names with two IP numbers:
dns1.cscdns.net points to 2610:a1:1022::100 and 156.154.130.100.
dns2.cscdns.net points to 2610:a1:1023::100 and 156.154.131.100.
Mail Servers
The custmx.cscdns.net mail server handles 21cscience.org.
21cscience.org shares the same mail server setup as other domains, including blaupunkt.ro, francescas.com.ar, inteslius.com, upmceast.com and myrotechhealthcare.com.
21cscience.org shares some mail servers with other domains, for example thepitchworkspace.com.
custmx.cscdns.net points to a single IP number: 198.58.121.58.