`centennialhc.com`

DNSSEC	⚠️ Not signed
NS	`xbru.br.ns.els-gms.att.net` ⭐
		A	127.0.0.1
NS	`dbru.br.ns.els-gms.att.net`
		A	2001:1890:1ff:9f0:68:94:156:134^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`dbru.br.ns.els-gms.att.net`
		A	68.94.156.134^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`dbru.br.ns.els-gms.att.net`
NS	`dmtu.mt.ns.els-gms.att.net`
		A	2001:1890:1ff:9f1:99:99:99:134^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`dmtu.mt.ns.els-gms.att.net`
		A	99.99.99.134^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`dmtu.mt.ns.els-gms.att.net`
MX	`mail.centennialhc.com` ⭐
		A	12.166.242.141^{🇺🇸 AS701812.128.0.0/9 12/8 upper half}
SOA	`xbru.br.ns.els-gms.att.net`rm-hostmaster@ems.att.com serial=10

`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=1778472716

Subdomains

mail.centennialhc.com

Same first word

centennialhc.com

DNS History

4 records (4 active, 0 former)

●NSdbru.br.ns.els-gms.att.net2015-05-27 → 2026-05-11 · 2 obs

● 2015-05-27 05:32:54
● 2026-05-11 04:33:24

●NSdmtu.mt.ns.els-gms.att.net2015-05-27 → 2026-05-11 · 2 obs

● 2015-05-27 05:32:54
● 2026-05-11 04:33:24

●NSxbru.br.ns.els-gms.att.net2015-05-27 → 2026-05-11 · 2 obs

● 2015-05-27 05:32:54
● 2026-05-11 04:33:24

●MXmail.centennialhc.com2015-05-27 → 2026-05-11 · 2 obs

● 2015-05-27 05:32:54
● 2026-05-11 04:33:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, b.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net...	-
centennialhc.com	dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net	-

✅ Authoritative Response

Server:99.99.99.134

NS records: dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centennialhc.com (unsigned zone)

⏱️ Timing

Total: 417ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net`
MX	1	`mail.centennialhc.com (pri: 10)`
SOA	1	`xbru.br.ns.els-gms.att.net rm-hostmaster`

Analysis

Hierarchy

The parent of mail.centennialhc.com is centennialhc.com.

Name Servers

The domain centennialhc.com is delegated to three name servers: dbru.br.ns.els-gms.att.net, xbru.br.ns.els-gms.att.net and dmtu.mt.ns.els-gms.att.net.

centennialhc.com shares name servers with other domains at least partially, for instance bcbs-direct.com, carnivalspecialtshirts.com, debisys.com, radaholidays.com and wynscape.net.

these name servers are commonly used with the name servers cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, b23.ns.els-gms.att.net, m23.ns.els-gms.att.net, ns3.level3.net, ns4.level3.net, b24.ns.els-gms.att.net, m24.ns.els-gms.att.net, dns3.carnival.com and emtu.mt.ns.els-gms.att.net.

Host names with two IPs:

dbru.br.ns.els-gms.att.net points to 2001:1890:1ff:9f0:68:94:156:134 and 68.94.156.134.

dmtu.mt.ns.els-gms.att.net points to 2001:1890:1ff:9f1:99:99:99:134 and 99.99.99.134.

Host names with one IP:

xbru.br.ns.els-gms.att.net points to 127.0.0.1.

Mail Servers

The mail server for centennialhc.com is mail.centennialhc.com.

Host name mail.centennialhc.com resolves to IP 12.166.242.141.

centennialhc.com - robtex.com