coursefiles.linuxcourseware.com - robtex.com
coursefiles.linuxcourseware.com
linuxcourseware.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 50.115.18.84🇺🇸 AS5386150.115.16.0/21 KGIX | ||||||
| NS | ns1.kualo.net ⭐ | ||||||
| NS | ns2.kualo.net | ||||||
| NS | ns3.kualo.net | ||||||
| NS | ns4.kualo.net | ||||||
| MX | linuxcourseware.com ⭐ | ||||||
| TXT | google-site-verification=B4IwzftMcfE4Jkcj5R-ERPYli7ONl_LiEG1f_hajZdE +ip4:75.... | ||||||
| TXT | v=spf1 ip4:50.115.18.80 include:spf.filteredmx.net +a +mx a mx include:relay.... | ||||||
| TXT | mailerlite-domain-verification=52c5a228aa84da61c9207960dc39b99368469bcf | ||||||
| TXT | google-site-verification=0xQMxcPkUHZvw3DrwmmvLl2I-UQg3lMAg-mSgL6NJ-A +ip4:75.... | ||||||
| SOA | ns1.kualo.netserver_alerts_inbound@kgix.com 2026-03-06 #1 | ||||||
Similar names
DNS History
1 record (1 active, 0 former)
●CNAMEcoursefiles.linuxcourseware.com.s3.us-east-2.amazonaws.com2026-03-05 → 2026-03-08 · 2 obs
● 2026-03-08 06:51:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net... | - |
| linuxcourseware.com | ns1.kualo.net, ns2.kualo.net, ns3.kualo.net, ns4.kualo.net | - |
✅ Authoritative Response
Server: 50.115.18.250
NS records: ns1.kualo.net, ns2.kualo.net, ns3.kualo.net, ns4.kualo.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linuxcourseware.com (unsigned zone)
⏱️ Timing
Total: 785ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| CNAME | 1 | coursefiles.linuxcourseware.com.s3.us-ea |
Analysis
IP Addresses
coursefiles.linuxcourseware.com maps to eight IPs: 3.5.92.118, 3.5.133.64, 3.5.133.99, 3.5.133.242, 3.5.133.248, 52.219.108.218, 52.219.111.226 and 52.219.141.66.
Other host names, for instance s3-r-w.us-east-2.amazonaws.com, share IP numbers with coursefiles.linuxcourseware.com.
Name Servers
coursefiles.linuxcourseware.com is delegated to four name servers: ns-90.awsdns-11.com, ns-1009.awsdns-62.net, ns-1428.awsdns-50.org and ns-1974.awsdns-54.co.uk.
coursefiles.linuxcourseware.com shares name servers with other domains at least partially, for instance inviami.com, mckeown.dev, 192.132.212.in-addr.arpa, web.maine.gov and s2holding.com.br.
Host names with two IP numbers:
ns-90.awsdns-11.com resolves to 2600:9000:5300:5a00::1 and 205.251.192.90.
ns-1009.awsdns-62.net resolves to 2600:9000:5303:f100::1 and 205.251.195.241.
ns-1428.awsdns-50.org resolves to 2600:9000:5305:9400::1 and 205.251.197.148.
ns-1974.awsdns-54.co.uk resolves to 2600:9000:5307:b600::1 and 205.251.199.182.