`contracostada.com`

DNSSEC	⚠️ Not signed
NS	`ns3.co.contra-costa.ca.us`
		A	64.166.144.3^{🇺🇸 AS238664.166.144.0/24}
			PTR	`ns3.co.contra-costa.ca.us`
NS	`ns4.co.contra-costa.ca.us`
		A	10.10.11.211

`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=1778784321

Same first word

contracostada.com

contracostada.org

DNS History

6 records (2 active, 4 former)

●NSns3.co.contra-costa.ca.us2026-04-17 → 2026-05-14 · 3 obs

○ 2017-09-14 22:28:28
● 2026-04-17 16:32:30
● 2026-05-14 18:48:08

●NSns4.co.contra-costa.ca.us2026-04-17 → 2026-05-14 · 3 obs

○ 2017-09-14 22:28:28
● 2026-04-17 16:32:30
● 2026-05-14 18:48:08

○NSns91.worldnic.com2017-09-14 → 2017-09-14 · 3 obs

● 2017-09-14 22:28:28
○ 2026-04-17 16:32:30
○ 2026-05-14 18:48:08

○NSns92.worldnic.com2017-09-14 → 2017-09-14 · 3 obs

● 2017-09-14 22:28:28
○ 2026-04-17 16:32:30
○ 2026-05-14 18:48:08

○MXp.webcom.ctmail.com2017-09-14 → 2017-09-14 · 3 obs

● 2017-09-14 22:28:28
○ 2026-04-17 16:32:30
○ 2026-05-14 18:48:08

○A205.178.189.1312017-09-14 → 2017-09-14 · 3 obs

● 2017-09-14 22:28:28
○ 2026-04-17 16:32:30
○ 2026-05-14 18:48:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, g.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net...	-
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	-
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records
contracostada.com	ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us	2 records
contracostada.com	ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us	2 records

✅ Authoritative Response

Server:64.166.144.3

NS records: ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contracostada.com (unsigned zone)

⏱️ Timing

Total: 4116ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us`

📌 Glue Records Collected

Total: 38

Out-of-bailiwick: 38 (ns3.co.contra-costa.ca.us, ns4.co.contra-costa.ca.us, ns3.co.contra-costa.ca.us...)

Analysis

Name Servers

Two name servers ns3.co.contra-costa.ca.us and ns4.co.contra-costa.ca.us are delegated to contracostada.com.

contracostada.com uses the same name server configuration as other domains, such as 144.166.64.in-addr.arpa, contracostada.org, 227.245.198.in-addr.arpa, ccounty.us and 150.166.64.in-addr.arpa.

contracostada.com at least partially shares name servers with other domains such as ccmap.us, so.cccounty.us, contra-costa.org, co.contra-costa.ca.us and cccounty.us.

These name servers are often used together with ns1-08.azure-dns.com, ns4-08.azure-dns.info, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns1-05.azure-dns.com, ns3-05.azure-dns.org, ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.

Host names with a single IP address:

ns3.co.contra-costa.ca.us points to 64.166.144.3

ns4.co.contra-costa.ca.us points to 10.10.11.211

contracostada.com - robtex.com