`doortools.com`

DNSSEC	⚠️ Not signed
A	109.199.115.17^{🇺🇸 CONTABO109.199.112.0/20}
		PTR	`vmi1999724.contaboserver.net`
NS	`cbru.br.ns.els-gms.att.net` ⭐
		A	2001:1890:1ff:9f0:68:94:156:132^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`cbru.br.ns.els-gms.att.net`
		A	68.94.156.132^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`cbru.br.ns.els-gms.att.net`
NS	`cmtu.mt.ns.els-gms.att.net`
		A	2001:1890:1ff:9f1:99:99:99:132^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`cmtu.mt.ns.els-gms.att.net`
		A	99.99.99.132^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`cmtu.mt.ns.els-gms.att.net`
SOA	`cbru.br.ns.els-gms.att.net`rm-hostmaster@ems.att.com serial=4

`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=1785559437

Same first word

doortools.com

Similar names

todoloros.com

DNS History

5 records (3 active, 2 former)

●NScbru.br.ns.els-gms.att.net2015-07-09 → 2026-08-01 · 2 obs

● 2015-07-09 03:59:50
● 2026-08-01 05:08:14

●NScmtu.mt.ns.els-gms.att.net2015-07-09 → 2026-08-01 · 2 obs

● 2015-07-09 03:59:50
● 2026-08-01 05:08:14

●A109.199.115.172019-03-05 → 2026-08-01 · 3 obs

○ 2017-02-19 21:36:44
● 2019-03-05 08:41:12
● 2026-08-01 05:08:14

○A162.210.49.2042016-06-21 → 2017-02-19 · 5 obs

○ 2016-02-28 07:13:56
● 2016-06-21 09:05:54
● 2017-02-19 21:36:44
○ 2019-03-05 08:41:12
○ 2026-08-01 05:08:14

○A205.173.226.2202015-07-09 → 2016-02-28 · 4 obs

● 2015-07-09 03:59:50
● 2016-02-28 07:13:56
○ 2016-06-21 09:05:54
○ 2026-08-01 05:08:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net...	-
doortools.com	cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net	-

✅ Authoritative Response

Server:99.99.99.132

NS records: cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doortools.com (unsigned zone)

⏱️ Timing

Total: 268ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`109.199.115.17`
NS	2	`cmtu.mt.ns.els-gms.att.net, cbru.br.ns.els-gms.att.net`
SOA	1	`cbru.br.ns.els-gms.att.net rm-hostmaster`

Analysis

IP Addresses

doortools.com directs to one IP number, which is 109.199.115.17.

doorproducts.com, doormachines.net and vmi1999724.contaboserver.net are examples of other host names that share IP numbers with doortools.com.

Name Servers

doortools.com uses two name servers for its delegation: cbru.br.ns.els-gms.att.net and cmtu.mt.ns.els-gms.att.net.

doortools.com has the same name server delegation as a number of other domains, such as 43.237.12.in-addr.arpa, kmsonline.org, 204.22.12.in-addr.arpa and two more.

doortools.com has at least partial name server overlap with other domains, such as 47.249.68.in-addr.arpa, ezpatientpay.com, mahoganybayandbeach.net and two others.

dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net and dns3.carnival.com — plus 7 other name servers — are commonly paired with these name servers.

The two host names cbru.br.ns.els-gms.att.net and cmtu.mt.ns.els-gms.att.net each have a pair of IP addresses: cbru.br.ns.els-gms.att.net has 68.94.156.132 and 2001:1890:1ff:9f0:68:94:156:132, and cmtu.mt.ns.els-gms.att.net has 99.99.99.132 and 2001:1890:1ff:9f1:99:99:99:132.

doortools.com - robtex.com

doortools.com

com