`seibusinessbuilder.com`

DNSSEC	⚠️ Not signed
NS	`cbru.br.ns.els-gms.att.net` ⚠️ Not in zone NS records
		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` ⚠️ Not in zone NS records
		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`

`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=1776128457

Same first word

seibusinessbuilder.com

DNS History

5 records (2 active, 3 former)

●NScbru.br.ns.els-gms.att.net2015-07-25 → 2026-04-14 · 2 obs

● 2015-07-25 09:09:38
● 2026-04-14 01:28:10

●NScmtu.mt.ns.els-gms.att.net2015-07-25 → 2026-04-14 · 2 obs

● 2015-07-25 09:09:38
● 2026-04-14 01:28:10

○NSns1.account3000.com2015-07-25 → 2018-11-12 · 5 obs

● 2015-07-25 09:09:38
○ 2015-09-09 18:51:22
● 2018-11-12 01:37:16
○ 2026-02-15 18:34:48
○ 2026-04-14 01:28:10

○NSns2.account3000.com2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 09:09:38
○ 2015-09-09 18:51:22
○ 2026-04-14 01:28:10

○A12.31.24.342015-07-25 → 2026-02-17 · 4 obs

● 2015-07-25 09:09:38
● 2026-02-17 03:05:04
○ 2026-02-20 03:22:46
○ 2026-04-14 01:28:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
seibusinessbuilder.com	cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net	-

✅ Authoritative Response

Server:68.94.156.132

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 seibusinessbuilder.com (unsigned zone)

⏱️ Timing

Total: 280ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

seibusinessbuilder.com is delegated to two name servers: cbru.br.ns.els-gms.att.net and cmtu.mt.ns.els-gms.att.net.

seibusinessbuilder.com shares the same name server setup as corpcon.net, doorproducts.net, leafriverenergycenter.com, sheriff.fairfield.oh.us and 0.165.74.64.in-addr.arpa.

seibusinessbuilder.com at least partially shares name servers with other domains, for instance gsbankatmaccess.com, lynxexpress.info, theupsstorelocalfranchise.com, pcspharma.com and foba.de.

These name servers are commonly used alongside dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net, ns9.customer.level3.net, ns6.customer.level3.net, dns3.carnival.com, nsa.ups.com, nsb.ups.com, auth1.dns.cogentco.com, auth2.dns.cogentco.com and shadowcat-i.ups.com.

Host names with two IP numbers: cbru.br.ns.els-gms.att.net points to: 2001:1890:1ff:9f0:68:94:156:132 and 68.94.156.132; cmtu.mt.ns.els-gms.att.net points to: 2001:1890:1ff:9f1:99:99:99:132 and 99.99.99.132.

seibusinessbuilder.com - robtex.com