`data-center.cisco`

DNSSEC	⚠️ Not signed
A	72.163.4.154^{🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States}
		PTR	`redirect.cisco.com`
NS	`ns1.cisco.com` ⭐
		A	2001:420:1101:6::a^{🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns1.cisco.com`
		A	72.163.5.201^{🇺🇸 ASNTTCISCO72.163.0.0/18 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns1.cisco.com`
NS	`ns2.cisco.com`
		A	2001:420:2041:5000::a^{🇺🇸 ASNTTCISCO2001:420:2000::/35 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns2.cisco.com`
		A	64.102.255.44^{🇺🇸 ASNTTCISCO64.102.0.0/16 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns2.cisco.com`
NS	`ns3.cisco.com`
		A	2001:420:1201:7::a^{🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns3.cisco.com`
		A	173.37.146.41^{🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States}
			PTR	`ns3.cisco.com`
SOA	`ns1.cisco.com`postmaster@cisco.com serial=2

`cisco`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nic.cisco` ⭐
	NS	`a.nic.cisco`
	NS	`b.nic.cisco`
	NS	`c.nic.cisco`
	NS	`ns2.dns.nic.cisco`
	NS	`ns3.dns.nic.cisco`
	SOA	`ns1.dns.nic.cisco`admin@tldns.godaddy serial=1775003824

Same first word

Similar names

DNS History

4 records (4 active, 0 former)

●NSns1.cisco.com2026-03-31 → 2026-04-01 · 2 obs

● 2026-03-31 13:46:10
● 2026-04-01 16:45:22

●NSns2.cisco.com2026-03-31 → 2026-04-01 · 2 obs

● 2026-03-31 13:46:10
● 2026-04-01 16:45:22

●NSns3.cisco.com2026-03-31 → 2026-04-01 · 2 obs

● 2026-03-31 13:46:10
● 2026-04-01 16:45:22

●A72.163.4.1542026-03-31 → 2026-04-01 · 2 obs

● 2026-03-31 13:46:10
● 2026-04-01 16:45:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cisco	a.nic.cisco, c.nic.cisco, ns2.dns.nic.cisco, ns1.dns.nic.cisco...	12 records
data-center.cisco	ns2.cisco.com, ns3.cisco.com, ns1.cisco.com	-

✅ Authoritative Response

Server:64.102.255.44

NS records: ns2.cisco.com, ns3.cisco.com, ns1.cisco.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for data-center.cisco (unsigned zone)

⏱️ Timing

Total: 626ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`72.163.4.154`
NS	3	`ns2.cisco.com, ns3.cisco.com...`
SOA	1	`ns1.cisco.com postmaster.cisco.com`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (ns3.dns.nic.cisco, ns2.dns.nic.cisco, ns1.dns.nic.cisco...)

Analysis

IP Addresses

data-center.cisco points to a single IP number: 72.163.4.154.

other host names for instance ciscosystems.net.sb, synatanews.com, ciscosystems.xj.cn, cisco.com.tr and cisco.com.hr share IP numbers with data-center.cisco.

Name Servers

data-center.cisco is delegated to three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.

data-center.cisco at least partially shares name servers with other domains, for instance cisco-vt.com, ciscoexplorer.com, ciscoexperience.net, socialgoodplatform.net and ciscolearningnetwork.biz.

Host names with two IP numbers:

Host ns1.cisco.com points to 2001:420:1101:6::a and 72.163.5.201.

Host ns2.cisco.com points to 2001:420:2041:5000::a and 64.102.255.44.

Host ns3.cisco.com points to 2001:420:1201:7::a and 173.37.146.41.

data-center.cisco - robtex.com