`securityinstructor.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=1784307572

Same first word

securityinstructor.com

Similar names

ironcitystructures.com

DNS History

11 records (4 active, 7 former)

○NSns1.sedoparking.com2015-05-08 → 2019-03-01 · 5 obs

○ 2008-03-20 12:57:28
● 2015-05-08 01:47:00
● 2019-03-01 09:58:08
○ 2026-05-19 09:47:32
○ 2026-07-17 17:25:56

○NSns2.sedoparking.com2015-05-08 → 2019-03-01 · 5 obs

○ 2008-03-20 12:57:28
● 2015-05-08 01:47:00
● 2019-03-01 09:58:08
○ 2026-05-19 09:47:32
○ 2026-07-17 17:25:56

●NSns3.afternic.com2026-05-19 → 2026-07-17 · 3 obs

○ 2019-03-01 09:58:08
● 2026-05-19 09:47:32
● 2026-07-17 17:25:56

●NSns4.afternic.com2026-05-19 → 2026-07-17 · 3 obs

○ 2019-03-01 09:58:08
● 2026-05-19 09:47:32
● 2026-07-17 17:25:56

○MXlocalhost2016-12-27 → 2019-03-01 · 5 obs

○ 2016-04-17 00:00:28
● 2016-12-27 14:34:36
● 2019-03-01 09:58:08
○ 2026-05-19 09:47:32
○ 2026-07-17 17:25:56

○MXmail.b-io.co2015-05-08 → 2015-05-08 · 4 obs

○ 2008-03-20 12:57:28
● 2015-05-08 01:47:00
○ 2015-10-09 01:02:46
○ 2026-07-17 17:25:56

○MXmail.nickstel.com2015-10-09 → 2016-04-17 · 5 obs

○ 2015-05-08 01:47:00
● 2015-10-09 01:02:46
● 2016-04-17 00:00:28
○ 2016-12-27 14:34:36
○ 2026-07-17 17:25:56

●A13.248.169.482026-05-19 → 2026-07-17 · 3 obs

○ 2019-03-01 09:58:08
● 2026-05-19 09:47:32
● 2026-07-17 17:25:56

○A72.52.4.1192015-05-08 → 2016-12-27 · 5 obs

○ 2008-03-20 12:57:28
● 2015-05-08 01:47:00
● 2016-12-27 14:34:36
○ 2019-03-01 09:58:08
○ 2026-07-17 17:25:56

●A76.223.54.1462026-05-19 → 2026-07-17 · 3 obs

○ 2019-03-01 09:58:08
● 2026-05-19 09:47:32
● 2026-07-17 17:25:56

○A91.195.240.1262019-03-01 → 2019-03-01 · 4 obs

○ 2016-12-27 14:34:36
● 2019-03-01 09:58:08
○ 2026-05-19 09:47:32
○ 2026-07-17 17:25:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
securityinstructor.com	ns3.afternic.com, ns4.afternic.com	2 records

✅ Authoritative Response

Server:97.74.98.65

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for securityinstructor.com (unsigned zone)

⏱️ Timing

Total: 483ms | 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

securityinstructor.com directs to two IP numbers, 13.248.169.48 and 76.223.54.146

Two other host names, along with buygroup.net, connectcomp.com and host-58-115-65-2.dynamic.kbtelecom.net, also share IP numbers with securityinstructor.com.

Name Servers

securityinstructor.com is served by two delegated name servers, ns3.afternic.com and ns4.afternic.com.

securityinstructor.com shares its NS records with other domains, for example pigeonlofts.com, mail.outt.org, porttravel.com and two others.

securityinstructor.com has at least partial name server overlap with other domains, such as lmusics.com, education8.com, biotea.org and two others.

It is common to find these name servers paired with the name servers verification-xca45ox5qyba6vycrpoay7.ns101.verify.hn.

ns3.afternic.com directs to 97.74.98.65 and ns4.afternic.com directs to 173.201.66.65; each host name points to exactly one IP number.

securityinstructor.com - robtex.com