ciscoios.info - robtex.com
ciscoios.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:420:1101:1::b🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | redirect.cisco.com | ||||||
| A | 72.163.4.154🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| 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.compostmaster@cisco.com serial=5 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1778424397 | ||||||
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
○NSedns-aln1-1-l2017-02-09 → 2017-02-09 · 4 obs
● 2017-02-09 03:39:20
○ 2026-05-03 12:24:12
○ 2026-05-10 15:14:54
○NSedns-aln1-1-l.cisco.com2015-06-28 → 2016-06-21 · 4 obs
● 2016-06-21 17:55:44
○ 2017-02-09 03:39:20
○ 2026-05-10 15:14:54
●A2001:420:1101:1::b2015-06-28 → 2026-05-10 · 2 obs
● 2026-05-10 15:14:54
●A72.163.4.1542015-06-28 → 2026-05-10 · 2 obs
● 2026-05-10 15:14:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info | - |
| ciscoios.info | ns2.cisco.com, ns1.cisco.com, ns3.cisco.com | - |
✅ Authoritative Response
Server:64.102.255.44
NS records: ns2.cisco.com, ns1.cisco.com, ns3.cisco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ciscoios.info (unsigned zone)
⏱️ Timing
Total: 534ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.163.4.154 |
| AAAA | 1 | 2001:420:1101:1::b |
| NS | 3 | ns1.cisco.com, ns2.cisco.com... |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
Analysis
IP Addresses
ciscoios.info points to two IP numbers: 2001:420:1101:1::b and 72.163.4.154.
Other host names such as synata.net, ciscosystems.web.ve, cisco.mx, ciscosystems.pro.vn and ciscowebex.co.in share IPs with ciscoios.info.
Name Servers
ciscoios.info is delegated to three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
ciscoios.info at least partially shares name servers with other domains, for instance ciatl-china.com, datacenterethernetalliance.com, clarity-wireless.com, ciscobrokers.com and webexshare.org.
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.