`offer4u.com`

DNSSEC	⚠️ Not signed
NS	`ns-east.cerf.net` ⚠️ Not in zone NS records
		A	2001:1890:1ff:9f1:99:99:99:136^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`ns-east.cerf.net`
		A	99.99.99.136^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`ns-east.cerf.net`
NS	`ns-west.cerf.net` ⚠️ Not in zone NS records
		A	2001:1890:1ff:9f0:68:94:156:136^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`ns-west.cerf.net`
		A	68.94.156.136^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`ns-west.cerf.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=1776570317

Same first word

offer4u.eu

offer4u.info

offer4u.co.uk

offer4u.net

offer4u.com

offer4u.co.il

DNS History

2 records (2 active, 0 former)

●NSns-east.cerf.net2026-03-21 → 2026-04-19 · 2 obs

● 2026-03-21 06:20:32
● 2026-04-19 03:52:52

●NSns-west.cerf.net2026-03-21 → 2026-04-19 · 2 obs

● 2026-03-21 06:20:32
● 2026-04-19 03:52:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net...	-
offer4u.com	ns-east.cerf.net, ns-west.cerf.net	-

✅ Authoritative Response

Server:99.99.99.136

NS records: ns-east.cerf.net, ns-west.cerf.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for offer4u.com (unsigned zone)

⏱️ Timing

Total: 333ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

offer4u.com has two name servers: ns-east.cerf.net and ns-west.cerf.net.

offer4u.com shares the same name server setup as other domains, for example bos.cerf.net, 203.241.63.in-addr.arpa, intl.attens.com, 62.108.199.in-addr.arpa and hq-san.attens.com.

offer4u.com shares some name servers with other domains, for example 154.134.23.in-addr.arpa, 228.177.198.in-addr.arpa, 0.42.32.in-addr.arpa, sciencenewsmagazine.org and sterlingplumbing.com.

these name servers are often used with ns6.customer.level3.net, ns9.customer.level3.net, dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net, ns1.sbcidc.com, ns2.sbcidc.com, ns1.attemea.net, ns2.attemea.net, ns3.attemea.net and ns4.attemea.net.

Host names with two IP numbers:

ns-east.cerf.net points to: 2001:1890:1ff:9f1:99:99:99:136 and 99.99.99.136; ns-west.cerf.net points to: 2001:1890:1ff:9f0:68:94:156:136 and 68.94.156.136.

offer4u.com - robtex.com

offer4u.com

com