ngcourses.org - robtex.com
ngcourses.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 75.2.26.191🇺🇸 Amazon75.2.16.0/20 | ||||||
| PTR | acb31c90855004c36.awsglobalaccelerator.com | ||||||
| A | 99.83.251.4🇺🇸 Amazon99.83.240.0/20 | ||||||
| NS | ns112.twdcns.org ⭐ | ||||||
| A | 2600:9000:5304:2f00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1071.awsdns-05.org | ||||||
| A | 205.251.196.47🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1071.awsdns-05.org | ||||||
| NS | ns112.twdcns.co.uk | ||||||
| A | 2600:9000:5307:3800::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1848.awsdns-39.co.uk | ||||||
| A | 205.251.199.56🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1848.awsdns-39.co.uk | ||||||
| NS | ns112.twdcns.com | ||||||
| A | 2600:9000:5300:a300::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-163.awsdns-20.com | ||||||
| A | 205.251.192.163🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-163.awsdns-20.com | ||||||
| NS | ns112.twdcns.net | ||||||
| A | 2600:9000:5302:9300::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-659.awsdns-18.net | ||||||
| A | 205.251.194.147🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-659.awsdns-18.net | ||||||
| SOA | ns112.twdcns.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
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=1775984015 | ||||||
Same first word
ngcourses.org |
Similar names
DNS History
6 records (6 active, 0 former)
●NSns112.twdcns.co.uk2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
●NSns112.twdcns.com2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
●NSns112.twdcns.net2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
●NSns112.twdcns.org2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
●A75.2.26.1912026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
●A99.83.251.42026-04-09 → 2026-04-12 · 2 obs
● 2026-04-12 09:14:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| ngcourses.org | ns112.twdcns.net, ns112.twdcns.org, ns112.twdcns.co.uk, ns112.twdcns.com | 1 record |
✅ Authoritative Response
Server:205.251.199.56
NS records: ns112.twdcns.net, ns112.twdcns.org, ns112.twdcns.co.uk, ns112.twdcns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ngcourses.org (unsigned zone)
⏱️ Timing
Total: 303ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 99.83.251.4, 75.2.26.191 |
| NS | 4 | ns112.twdcns.co.uk, ns112.twdcns.com... |
| SOA | 1 | ns112.twdcns.org awsdns-hostmaster.amazo |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns112.twdcns.org)
Analysis
IP Addresses
ngcourses.org points to two IP numbers: 75.2.26.191 and 99.83.251.4.
Other host names such as ngstore.com, nationalgeographickids.org, wickedtuna5.nationalgeographic.com, natgeoexplorer.com and ngjourneys.co.uk share IP numbers with ngcourses.org.
Name Servers
ngcourses.org is delegated to four name servers: ns112.twdcns.com, ns112.twdcns.net, ns112.twdcns.org and ns112.twdcns.co.uk.
At least part of the name servers for ngcourses.org are shared with other domains, for instance ngmallorcastore.com, indianajonesmovie.ie, ryelanefilm.com, thetitanicfilm.com and vaianapelicula.es.
Host names with two IP numbers:
ns112.twdcns.com points to: 2600:9000:5300:a300::1 and 205.251.192.163
ns112.twdcns.net points to: 2600:9000:5302:9300::1 and 205.251.194.147
ns112.twdcns.org points to: 2600:9000:5304:2f00::1 and 205.251.196.47
ns112.twdcns.co.uk points to: 2600:9000:5307:3800::1 and 205.251.199.56