`cyberinstruction.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=1776218647

Subdomains

hostmaster.cyberinstruction.com

DNS History

6 records (4 active, 2 former)

●NSns3.afternic.com2026-04-15 → 2026-04-15 · 1 obs

● 2026-04-15 02:21:34

●NSns4.afternic.com2026-04-15 → 2026-04-15 · 1 obs

● 2026-04-15 02:21:34

●A13.248.169.482026-04-15 → 2026-04-15 · 2 obs

○ 2018-10-18 05:25:46
● 2026-04-15 02:21:34

○A207.148.248.1432015-11-11 → 2018-10-18 · 4 obs

○ 2015-07-11 09:48:56
● 2015-11-11 00:03:32
● 2018-10-18 05:25:46
○ 2026-04-15 02:21:34

○A66.151.181.492015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 09:48:56
○ 2015-11-11 00:03:32
○ 2026-04-15 02:21:34

●A76.223.54.1462026-04-15 → 2026-04-15 · 2 obs

○ 2018-10-18 05:25:46
● 2026-04-15 02:21:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cyberinstruction.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 cyberinstruction.com (unsigned zone)

⏱️ Timing

Total: 61ms | 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

Hierarchy

cyberinstruction.com is the parent of hostmaster.cyberinstruction.com.

IP Addresses

cyberinstruction.com points to two IPs: 13.248.169.48 and 76.223.54.146.

Other host names including lmad.org, foretaksregister.com, ntory.com, nbalanqiubifenbocai.j-company.com and collectitus.com share IP numbers with cyberinstruction.com.

Name Servers

cyberinstruction.com's delegation uses two name servers, ns3.afternic.com and ns4.afternic.com.

cyberinstruction.com shares the same name server setup as other domains, for example mail.forextradingteam.com, mia1-gw01.entervoip.com, jokeragent.com, musicuniverse.co.uk and 177.240.127.rdns.ubiquity.io.

cyberinstruction.com shares some name servers with other domains, such as movesmart.org, fzzs.com, dnyg.com and www.xnxh.com.

Host names with a single IP:

ns3.afternic.com points to 97.74.98.65.

ns4.afternic.com points to 173.201.66.65.

cyberinstruction.com - robtex.com