ns2.opencourse.com - robtex.com
ns2.opencourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 66.162.45.44🇺🇸 AS354966.162.0.0/16 | ||||||
| PTR | gw.opencourse.com | ||||||
opencourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.206.180.119🇺🇸 AS209216.206.0.0/15 | ||||||
| NS | dns1.p02.nsone.net ⭐ | ||||||
| NS | dns1.p01.nsone.net | ||||||
| NS | dns2.p01.nsone.net | ||||||
| NS | dns3.p01.nsone.net | ||||||
| NS | dns4.p01.nsone.net | ||||||
| NS | ns05.sportsdns.net | ||||||
| NS | ns06.sportsdns.net | ||||||
| NS | ns07.sportsdns.net | ||||||
| NS | ns08.sportsdns.net | ||||||
| MX | mxa-000e8b01.gslb.pphosted.com ⭐ | ||||||
| MX | mxb-000e8b01.gslb.pphosted.com ⭐ | ||||||
| TXT | v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all | ||||||
| SOA | dns1.p02.nsone.nethostmaster@nsone.net serial=1657769253 | ||||||
Same first word
Similar names
DNS History
1 record (1 active, 0 former)
●A66.162.45.442015-05-27 → 2026-06-15 · 2 obs
● 2015-05-27 00:27:58
● 2026-06-15 08:48:52
● 2026-06-15 08:48:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net... | - |
| opencourse.com | dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net... | - |
✅ Authoritative Response
Server:198.51.45.1
NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns05.sportsdns.net, ns06.sportsdns.net, ns07.sportsdns.net, ns08.sportsdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opencourse.com (unsigned zone)
⏱️ Timing
Total: 286ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 66.162.45.44 |
Analysis
IP Addresses
ns2.opencourse.com directs to one IP number, which is 66.162.45.44.