coursebidding.com - robtex.com
coursebidding.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
coursebidding.com |
Similar names
DNS History
8 records (5 active, 3 former)
●NSns21.domaincontrol.com2018-01-18 → 2026-03-24 · 3 obs
● 2018-01-18 10:57:22
● 2026-03-24 06:37:06
●NSns22.domaincontrol.com2018-01-18 → 2026-03-24 · 3 obs
● 2018-01-18 10:57:22
● 2026-03-24 06:37:06
○NSns47.domaincontrol.com2017-01-03 → 2017-01-03 · 3 obs
○ 2018-01-18 10:57:22
○ 2026-03-24 06:37:06
○NSns48.domaincontrol.com2017-01-03 → 2017-01-03 · 3 obs
○ 2018-01-18 10:57:22
○ 2026-03-24 06:37:06
●MXmailstore1.secureserver.net2017-01-03 → 2026-03-24 · 2 obs
● 2026-03-24 06:37:06
●MXsmtp.secureserver.net2017-01-03 → 2026-03-24 · 2 obs
● 2026-03-24 06:37:06
○A104.43.20.2342017-01-03 → 2018-01-18 · 4 obs
● 2018-01-18 10:57:22
○ 2026-03-17 10:35:08
○ 2026-03-24 06:37:06
●A20.191.141.92026-03-17 → 2026-03-24 · 3 obs
● 2026-03-17 10:35:08
● 2026-03-24 06:37:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| coursebidding.com | ns21.domaincontrol.com, ns22.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.68.11
NS records: ns21.domaincontrol.com, ns22.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursebidding.com (unsigned zone)
⏱️ Timing
Total: 161ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 20.191.141.9 |
| NS | 2 | ns21.domaincontrol.com, ns22.domaincontrol.com |
| MX | 2 | smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10) |
| SOA | 1 | ns21.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns21.domaincontrol.com, ns21.domaincontrol.com, ns22.domaincontrol.com...)
Analysis
IP Addresses
coursebidding.com points to an IP address: 20.191.141.9.
Other host names, for instance sulat.gov.ph, share IP numbers with coursebidding.com.
Name Servers
Two name servers ns21.domaincontrol.com and ns22.domaincontrol.com handle the delegation for coursebidding.com.
coursebidding.com shares the same name server setup as other domains, for instance delbarrio.tv, bloxelsbuilder.com, workability.co, parksontap.com and triviafest.com.
Host names with two IP numbers:
ns21.domaincontrol.com points to 2603:5:2141::b and 97.74.100.11.
ns22.domaincontrol.com points to 2603:5:2241::b and 173.201.68.11.
Mail Servers
coursebidding.com is handled by two mail servers: mailstore1.secureserver.net and smtp.secureserver.net.
coursebidding.com uses the same mail server setup as other domains, for instance parvesh.mobi, pafosu.de, bambulee.com, hiesterbeatshendrick.com and storehdusa.com.
Host names with three IP numbers:
mailstore1.secureserver.net points to: 216.69.141.78, 216.69.141.114 and 216.69.141.162.
smtp.secureserver.net points to: 216.69.141.71, 216.69.141.84 and 216.69.141.113.