`mathtutor255.com`

DNSSEC	⚠️ Not signed
A	73.233.163.213^{🇺🇸 COMCAST-IBONE73.0.0.0/8 Comcast Cable Communications, LLC}
		PTR	`c-73-233-163-213.hsd1.pa.comcast.net`
NS	`ns13.domaincontrol.com` ⭐
		A	2603:5:21a0::7^{🇺🇸 GODADDY-DNS2603:5:21a0::/44}
			PTR	`ns13.domaincontrol.com`
		A	97.74.106.7^{🇺🇸 GODADDY-DNS97.74.106.0/23}
			PTR	`ns13.domaincontrol.com`
NS	`ns14.domaincontrol.com`
		A	2603:5:22a0::7^{🇺🇸 GODADDY-DNS2603:5:22a0::/44}
			PTR	`ns14.domaincontrol.com`
		A	173.201.74.7^{🇺🇸 GODADDY-DNS173.201.74.0/23}
			PTR	`ns14.domaincontrol.com`
MX	`mathtutor255-com.mail.protection.outlook.com` ⭐
TXT	`v=spf1 include:secureserver.net -all`
TXT	`NETORGFT11138686.onmicrosoft.com`
SOA	`ns13.domaincontrol.com`dns@jomax.net 2025-09-10 #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=1774362087

Same first word

mathtutor255.com

DNS History

8 records (4 active, 4 former)

●NSns13.domaincontrol.com2015-07-01 → 2026-03-24 · 2 obs

● 2015-07-01 19:10:32
● 2026-03-24 14:36:28

●NSns14.domaincontrol.com2015-07-01 → 2026-03-24 · 2 obs

● 2015-07-01 19:10:32
● 2026-03-24 14:36:28

○MXmailstore1.secureserver.net2015-07-01 → 2016-12-29 · 4 obs

● 2015-07-01 19:10:32
● 2016-12-29 01:57:28
○ 2026-03-24 14:36:26
○ 2026-03-24 14:36:28

●MXmathtutor255-com.mail.protection.outlook.com2026-03-24 → 2026-03-24 · 3 obs

○ 2016-12-29 01:57:28
● 2026-03-24 14:36:26
● 2026-03-24 14:36:28

○MXsmtp.secureserver.net2015-07-01 → 2016-12-29 · 4 obs

● 2015-07-01 19:10:32
● 2016-12-29 01:57:28
○ 2026-03-24 14:36:26
○ 2026-03-24 14:36:28

○A68.80.117.1062015-07-01 → 2016-04-24 · 4 obs

● 2015-07-01 19:10:32
● 2016-04-24 03:43:16
○ 2016-12-29 01:57:28
○ 2026-03-24 14:36:28

○A68.80.57.522016-12-29 → 2016-12-29 · 4 obs

○ 2016-04-24 03:43:16
● 2016-12-29 01:57:28
○ 2026-03-24 14:36:26
○ 2026-03-24 14:36:28

●A73.233.163.2132026-03-24 → 2026-03-24 · 3 obs

○ 2016-12-29 01:57:28
● 2026-03-24 14:36:26
● 2026-03-24 14:36:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mathtutor255.com	ns13.domaincontrol.com, ns14.domaincontrol.com	4 records

✅ Authoritative Response

Server:97.74.106.7

NS records: ns13.domaincontrol.com, ns14.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathtutor255.com (unsigned zone)

⏱️ Timing

Total: 128ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`73.233.163.213`
NS	2	`ns13.domaincontrol.com, ns14.domaincontrol.com`
MX	1	`mathtutor255-com.mail.protection.outlook`
TXT	2	`v=spf1 include:secureserver.net -all, NETORGFT11138686.onmicrosoft.com`
SOA	1	`ns13.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns13.domaincontrol.com, ns13.domaincontrol.com, ns14.domaincontrol.com...)

Analysis

IP Addresses

mathtutor255.com points to a single IP number: 73.233.163.213.

Other host names, for instance c-73-233-163-213.hsd1.pa.comcast.net, share IP numbers with mathtutor255.com.

Name Servers

mathtutor255.com is delegated to two name servers: ns13.domaincontrol.com and ns14.domaincontrol.com.

mathtutor255.com shares the same name server setup as other domains, for example climateprediction.net, meowmail.com, memberships101.com, rsm.international and mubasher.com.

mathtutor255.com at least partially shares its name servers with other domains, for instance bulkbarn.ca.

Host names with two IP numbers:

ns13.domaincontrol.com points to 2603:5:21a0::7 and 97.74.106.7

ns14.domaincontrol.com points to 2603:5:22a0::7 and 173.201.74.7

Mail Servers

mathtutor255.com is handled by a single mail server, mathtutor255-com.mail.protection.outlook.com.

mathtutor255.com - robtex.com