cisco.sv - robtex.com
cisco.sv
| 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 | ||||||
| TXT | identrust_validate=Ny/XkfnCHU+oINld7y9oajvlCbrrecERvmXJXFXcCzcO | ||||||
| TXT | 3b1c34b7-0394-434f-a3cf-d61fc7a3427f | ||||||
| SOA | ns1.cisco.compostmaster@cisco.com serial=5 | ||||||
sv
| DNSSEC | ⚠️ Not signed | ||||||
| NS | sir.red.sv ⭐ | ||||||
| NS | a.lactld.org | ||||||
| NS | dns-ext.nic.cr | ||||||
| NS | ix.red.sv | ||||||
| NS | ns.dns.br | ||||||
| NS | p.ns.sv | ||||||
| SOA | sir.red.svlito@ibarra.sv 2026-06-19 #1 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●A72.163.4.1542026-05-25 → 2026-06-21 · 2 obs
● 2026-06-21 17:31:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| sv | dns-ext.nic.cr, ix.red.sv, ns.dns.br, a.lactld.org... | 10 records |
| cisco.sv | ns2.cisco.com, ns3.cisco.com, ns1.cisco.com | - |
✅ Authoritative Response
Server:72.163.5.201
NS records: ns2.cisco.com, ns3.cisco.com, ns1.cisco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sv (unsigned zone)
⏱️ Timing
Total: 615ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.163.4.154 |
| NS | 3 | ns1.cisco.com, ns3.cisco.com... |
| TXT | 2 | identrust_validate=Ny/XkfnCHU+oINld7y9oa, 3b1c34b7-0394-434f-a3cf-d61fc7a3427f |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
📌 Glue Records Collected
Total: 10
In-bailiwick: 4 (p.ns.sv, ix.red.sv, sir.red.sv...)
Out-of-bailiwick: 6 (dns-ext.nic.cr, ns.dns.br, a.lactld.org...)
Analysis
IP Addresses
cisco.sv points to a single IP number: 72.163.4.154.
Additional host names — www.cisco.biz, ciscotaccc.com, ciscowebex.co.uk and two others — share IP numbers with cisco.sv.
Name Servers
cisco.sv carries NS records delegating to ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
cisco.sv partially shares its NS delegation with several other domains, including ciscostarentnetworks.eu, netacad-quality.org, cloudcenter.cisco.com and two others.
ns1.cisco.com, ns2.cisco.com and ns3.cisco.com are three hostnames that each resolve to a pair of IP addresses: ns1.cisco.com to 72.163.5.201 and 2001:420:1101:6::a, ns2.cisco.com to 64.102.255.44 and 2001:420:2041:5000::a, and ns3.cisco.com to 173.37.146.41 and 2001:420:1201:7::a.