`mail.centennialhc.com`

	DNSSEC	⚠️ Not signed
	A	12.166.242.141^{🇺🇸 AS701812.128.0.0/9 12/8 upper half}

`centennialhc.com`

	DNSSEC	⚠️ Not signed
	NS	`xbru.br.ns.els-gms.att.net` ⭐
	NS	`dbru.br.ns.els-gms.att.net`
	NS	`dmtu.mt.ns.els-gms.att.net`
	MX	`mail.centennialhc.com` ⭐
	SOA	`xbru.br.ns.els-gms.att.net`rm-hostmaster@ems.att.com serial=10

MX for

centennialhc.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A12.166.242.1412015-06-01 → 2026-05-11 · 2 obs

● 2015-06-01 06:39:16
● 2026-05-11 15:22:20

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:68.94.156.134

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: 492ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`12.166.242.141`

Analysis

Mail Server Role

mail.centennialhc.com serves as the mail server for centennialhc.com.

IP Addresses

mail.centennialhc.com points to a single IP: 12.166.242.141.

mail.centennialhc.com - robtex.com