`mhemathcanada.com`

DNSSEC	⚠️ Not signed
NS	`pdns85.ultradns.com` ⭐
		A	2001:502:f3ff::79^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns85.ultradns.com`
		A	156.154.64.85^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns85.ultradns.com`
NS	`pdns85.ultradns.biz`
		A	2610:a1:1015::79^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns85.ultradns.biz`
		A	156.154.66.85^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns85.ultradns.biz`
NS	`pdns85.ultradns.net`
		A	2610:a1:1014::79^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns85.ultradns.net`
		A	156.154.65.85^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns85.ultradns.net`
NS	`pdns85.ultradns.org`
		A	2001:502:4612::79^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns85.ultradns.org`
		A	156.154.67.85^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns85.ultradns.org`
TXT	`v=spf1 mx -all`
SOA	`pdns85.ultradns.com`hostmaster@mheducation.com 2015-12-11 #21

`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=1784490967

Same first word

mhemathcanada.com

mhemathcanada.ca

DNS History

5 records (4 active, 1 former)

●NSpdns85.ultradns.biz2016-12-20 → 2026-07-19 · 2 obs

● 2016-12-20 14:23:16
● 2026-07-19 20:10:54

●NSpdns85.ultradns.com2016-12-20 → 2026-07-19 · 2 obs

● 2016-12-20 14:23:16
● 2026-07-19 20:10:54

●NSpdns85.ultradns.net2016-12-20 → 2026-07-19 · 2 obs

● 2016-12-20 14:23:16
● 2026-07-19 20:10:54

●NSpdns85.ultradns.org2016-12-20 → 2026-07-19 · 2 obs

● 2016-12-20 14:23:16
● 2026-07-19 20:10:54

○A192.243.93.452016-12-20 → 2017-10-18 · 4 obs

● 2016-12-20 14:23:16
● 2017-10-18 00:32:58
○ 2026-04-24 16:03:56
○ 2026-07-19 20:10:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mhemathcanada.com	pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.67.85

NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mhemathcanada.com (unsigned zone)

⏱️ Timing

Total: 3137ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
TXT	1	`v=spf1 mx -all`
SOA	1	`pdns85.ultradns.com hostmaster.mheducati`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns85.ultradns.com, pdns85.ultradns.com)

Analysis

Name Servers

The authoritative name servers for mhemathcanada.com are pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

mhemathcanada.com has at least partial name server overlap with other domains, such as primarysourceinvestigator.com, mcgrawhillsconnect.com, sralanguagearts.com and two others.

pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org all point to exactly two IP numbers each: pdns85.ultradns.biz → 156.154.66.85 and 2610:a1:1015::79; pdns85.ultradns.com → 156.154.64.85 and 2001:502:f3ff::79; pdns85.ultradns.net → 156.154.65.85 and 2610:a1:1014::79; pdns85.ultradns.org → 156.154.67.85 and 2001:502:4612::79.

mhemathcanada.com - robtex.com