`mcmastertubing.com`

DNSSEC	⚠️ Not signed
A	209.64.25.150^{🇺🇸 AS22034209.64.25.0/24 Proxy registration to prevent harm from ARIN-NONAUTH shutdown}
		PTR	`mcmaster.cn`
		PTR	`mcmater.com`
		PTR	`mcmaster-carr.nl`
		PTR	`mcmastercarr.nl`
		PTR	`mcmaster-carr.ru`
		PTR	`mcmastercarr.ru`
		PTR	`mcmaster-carr.uk`
		PTR	`mcmastercarr.us`
		PTR	`correspondence.mcmaster.com`
		PTR	`www.mcmater.com`
		PTR	`www.mcmaster-carr.nl`
		PTR	`www.mcmaster-carr.ru`
		PTR	`www.mcmastercarr.ru`
		PTR	`www.mcmaster-carr.uk`
		PTR	`www.mcmastercarr.us`
		PTR	`www.correspondence.mcmaster.com`
NS	`ns2.mcmaster.com` ⭐
		A	12.203.197.20^{🇺🇸 AS2203412.203.197.0/24 Proxy registration to prevent harm from ARIN-NONAUTH shutdown}
NS	`ns1.mcmaster.com`
		A	209.64.25.48^{🇺🇸 AS22034209.64.25.0/24 Proxy registration to prevent harm from ARIN-NONAUTH shutdown}
			PTR	`ns1.mcmaster.com`
NS	`ns3.mcmaster.com`
		A	209.64.25.47^{🇺🇸 AS22034209.64.25.0/24 Proxy registration to prevent harm from ARIN-NONAUTH shutdown}
			PTR	`ns3.mcmaster.com`
NS	`ns4.mcmaster.com`
		A	12.203.197.21^{🇺🇸 AS2203412.203.197.0/24 Proxy registration to prevent harm from ARIN-NONAUTH shutdown}
			PTR	`dnsep5002.mcmaster.com`
MX	`mx0a-00570c01.pphosted.com` ⭐
		A	205.220.166.57^{🇺🇸 Proofpoint205.220.166.0/24 Inc.}
			PTR	`mx0a-00570c01.pphosted.com`
MX	`mx0b-00570c01.pphosted.com` ⭐
		A	205.220.178.57^{🇺🇸 Proofpoint205.220.178.0/24 Inc.}
			PTR	`mx0b-00570c01.pphosted.com`
SOA	`ns2.mcmaster.com`hostmaster@mcmaster.com serial=972

`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=1778765891

Subdomains

dnsep501.mcmastertubing.com

dnsep101.mcmastertubing.com

Same first word

mcmastertubing.mobi

mcmastertubing.net

DNS History

16 records (7 active, 9 former)

●NSns1.mcmaster.com2015-05-27 → 2026-05-14 · 2 obs

● 2015-05-27 01:38:00
● 2026-05-14 13:57:10

●NSns2.mcmaster.com2015-05-27 → 2026-05-14 · 2 obs

● 2015-05-27 01:38:00
● 2026-05-14 13:57:10

●NSns3.mcmaster.com2015-05-27 → 2026-05-14 · 2 obs

● 2015-05-27 01:38:00
● 2026-05-14 13:57:10

●NSns4.mcmaster.com2015-05-27 → 2026-05-14 · 2 obs

● 2015-05-27 01:38:00
● 2026-05-14 13:57:10

●MXmx0a-00570c01.pphosted.com2026-05-14 → 2026-05-14 · 3 obs

○ 2020-03-19 11:26:08
● 2026-05-14 13:57:06
● 2026-05-14 13:57:10

●MXmx0b-00570c01.pphosted.com2026-05-14 → 2026-05-14 · 3 obs

○ 2020-03-19 11:26:08
● 2026-05-14 13:57:06
● 2026-05-14 13:57:10

○MXspmep104.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep105.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep106.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep107.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep504.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep505.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep506.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

○MXspmep507.mcmaster.com2015-05-27 → 2020-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2020-03-19 11:26:08
○ 2026-05-14 13:57:06
○ 2026-05-14 13:57:10

●A209.64.25.1502020-03-19 → 2026-05-14 · 3 obs

○ 2017-03-19 22:56:46
● 2020-03-19 11:26:08
● 2026-05-14 13:57:10

○A209.64.25.2302015-05-27 → 2017-03-19 · 4 obs

● 2015-05-27 01:38:00
● 2017-03-19 22:56:46
○ 2020-03-19 11:26:08
○ 2026-05-14 13:57:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mcmastertubing.com	ns1.mcmaster.com, ns2.mcmaster.com, ns3.mcmaster.com, ns4.mcmaster.com	4 records

✅ Authoritative Response

Server:12.203.197.21

NS records: ns1.mcmaster.com, ns2.mcmaster.com, ns3.mcmaster.com, ns4.mcmaster.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mcmastertubing.com (unsigned zone)

⏱️ Timing

Total: 211ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`209.64.25.150`
NS	4	`ns4.mcmaster.com, ns3.mcmaster.com...`
MX	2	`mx0b-00570c01.pphosted.com (pri: 0), mx0a-00570c01.pphosted.com (pri: 0)`
SOA	1	`ns2.mcmaster.com hostmaster.mcmaster.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.mcmaster.com, ns2.mcmaster.com, ns3.mcmaster.com...)

Analysis

Hierarchy

mcmastertubing.com is the parent of dnsep501.mcmastertubing.com and dnsep101.mcmastertubing.com.

IP Addresses

mcmastertubing.com points to an IP address: 209.64.25.150.

other host names include marksam.com, mcmaster-carr.mobi, mcmaster-carr.com, mcmasterlighting.org and e-mcmaster.org; they share IP numbers with mcmastertubing.com.

Name Servers

mcmastertubing.com delegates to four name servers: ns1.mcmaster.com, ns2.mcmaster.com, ns3.mcmaster.com and ns4.mcmaster.com.

mcmastertubing.com at least partially shares name servers with other domains, for instance mcmastef.com, mcmaster-carrsupplycompany.org, mcmasteronline.org, mcmasterfasteners.net and mcmastersupplies.mobi.

Host names with one IP number: ns1.mcmaster.com points to: 209.64.25.48; ns2.mcmaster.com points to: 12.203.197.20; ns3.mcmaster.com points to: 209.64.25.47; ns4.mcmaster.com points to: 12.203.197.21.

Mail Servers

mcmastertubing.com is handled by two mail servers: mx0a-00570c01.pphosted.com and mx0b-00570c01.pphosted.com.

mcmastertubing.com uses the same mail server setup as other domains, for instance mcmaster-direct.biz, mcmastercarrelectrical.mobi, mcmastermeasuring.net, mcmasterelectronics.net and carrmcmaster.mobi.

mcmastertubing.com shares at least some mail servers with other domains, for instance tmcmaster.com.

Host names with one IP:

mx0a-00570c01.pphosted.com points to: 205.220.166.57

mx0b-00570c01.pphosted.com points to: 205.220.178.57

mcmastertubing.com - robtex.com