`openaicourses.com`

DNSSEC	⚠️ Not signed
A	13.248.169.48^{🇺🇸 Amazon13.248.160.0/20}
		PTR	`a904c694c05102f30.awsglobalaccelerator.com`
A	76.223.54.146^{🇺🇸 Amazon76.223.48.0/20}
NS	`ns3.afternic.com` ⭐
		A	97.74.98.65^{🇺🇸 GODADDY-DNS97.74.98.0/23}
			PTR	`ns3.afternic.com`
NS	`ns4.afternic.com`
		A	173.201.66.65^{🇺🇸 GODADDY-DNS173.201.66.0/23}
			PTR	`ns4.namefind.com`
TXT	`v=spf1 -all`
SOA	`ns3.afternic.com`dns@jomax.net 2025-10-01 #0

`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.net`nstld@verisign-grs.com serial=1776016222

Same first word

openaicourses.com

DNS History

4 records (4 active, 0 former)

●NSns3.afternic.com2026-04-04 → 2026-04-12 · 2 obs

● 2026-04-04 14:38:34
● 2026-04-12 18:14:58

●NSns4.afternic.com2026-04-04 → 2026-04-12 · 2 obs

● 2026-04-04 14:38:34
● 2026-04-12 18:14:58

●A13.248.169.482026-04-04 → 2026-04-12 · 2 obs

● 2026-04-04 14:38:34
● 2026-04-12 18:14:58

●A76.223.54.1462026-04-04 → 2026-04-12 · 2 obs

● 2026-04-04 14:38:34
● 2026-04-12 18:14:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net...	-
openaicourses.com	ns3.afternic.com, ns4.afternic.com	2 records

✅ Authoritative Response

Server:173.201.66.65

NS records: ns3.afternic.com, ns4.afternic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openaicourses.com (unsigned zone)

⏱️ Timing

Total: 230ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`13.248.169.48, 76.223.54.146`
NS	2	`ns3.afternic.com, ns4.afternic.com`
MX	1	`. (pri: 0)`
TXT	1	`v=spf1 -all`
SOA	1	`ns3.afternic.com dns.jomax.net`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.afternic.com, ns4.afternic.com)

Analysis

IP Addresses

openaicourses.com points to two IP numbers: 13.248.169.48 and 76.223.54.146.

Other host names, for instance marstechnology.co, snakebites.com, speedlink.org, www.micsarehot.com and gadoz.com share IP numbers with openaicourses.com.

Name Servers

openaicourses.com is delegated to two name servers: ns3.afternic.com and ns4.afternic.com.

openaicourses.com uses the same name server setup as other domains, for instance globecbg.com, invoiceplace.com, e5fa8f335531.usasavingsclub.com, tvgroup.com and globalsuperstore.com.

openaicourses.com shares name servers with other domains at least partially, for instance wilmingtonloans.com, beauty-b.com, ccx.co, transformationalnetwork.com and mrsenterprises.com.

Host names with one IP number:

ns3.afternic.com points to: 97.74.98.65.

ns4.afternic.com points to: 173.201.66.65.

openaicourses.com - robtex.com