Hosting check
Who hosts cisco.com?
cisco.com is hosted by CISCO SYSTEMS, INC. in Richardson, United States. DNS by Akamai Edge DNS. Email is self-hosted.
Checked 14 Oct 2026 at 12:40 UTC
Server
72.163.4.185
CISCO SYSTEMS, INC. · AS109
🇺🇸Richardson, United States
Checks
6 of 7 checks pass
Warnings are worth a look, but nothing is broken.
Hosting provider
High confidence
CISCO SYSTEMS, INC.
Business networkAS109. A known platform or a plain hosting network answered, so the host is certain.
- Network
CISCO SYSTEMS, INC.AS109 · 72.163.4.0/24cisco.com
Owns the IP address that answered our lookup.
How we know
1 signal- NetworkAS109CISCO SYSTEMS, INC.
IP & network
72.163.4.185 · Richardson
- IP address
- 72.163.4.185
- Reverse DNS
- redirect-ns.cisco.com
- Network
- CISCO SYSTEMS, INC.AS109 · business
- Route
- 72.163.4.0/24
- Location
- Richardson, Texas, United States
- Timezone
- America/Chicago
Coordinates, postal code and company
Geolocation describes the network's registered location, not a street address. For a data center IP the postal code and coordinates are approximate.
- Coordinates
- 32.9482,-96.7297
- Postal code
- 75080
- Country code
- US
DNS records
112 records in 7 types
- A
1 record
IPv4 addresses the name points to
- 72.163.4.185
- AAAA
1 record
IPv6 addresses the name points to
- 2001:420:1101:1::185
- NS
5 records
Nameservers that answer for the zone
- a28-64.akam.net
- ns1.cisco.com
- ns2.cisco.com
- ns3.cisco.com
- a3-64.akam.net
- MX
3 records
Mail servers, lowest priority first
- 10 alln-mx-01.cisco.com
- 20 rcdn-mx-01.cisco.com
- 30 aer-mx-01.cisco.com
- CAA
11 records
Certificate authorities allowed to issue certificates
- 0 issue "pki.goog"
- 128 issuewild "ssl.com"
- 128 issuewild "digicert.com"
- 0 issue "globalsign.com"
- 0 issue "amazon.com"
- 0 issue "identrust.com"
- 0 issue "digicert.com"
- 0 issue "letsencrypt.org"
- 128 iodef "mailto:infosec@cisco.com"
- 0 issue "ssl.com"
- 128 issuewild "identrust.com"
- SOA
1 record
Zone authority: primary nameserver, admin mailbox and timers
- ns1.cisco.com postmaster.cisco.com 1292984 7200 1800 864000 1800
- TXT
90 records
1 SPF policy, 63 ownership proofs, 26 other
- atlassian-domain-verification=7JYRlY9ijBijTJ0YS5a8/58DU7OfKAHMYRufcy0TC57j2mNceH8rg4ajRzErc22Z
- cloudflare_dashboard_sso=f60a7d128e406b8d9dd4103dd3554f6b
- jetbrains-domain-verification=e9mcf886rjng68x4qu59h22ef
- postman-domain-verification=bac0835520fcf3b408c07c584b3575452de5930d08a942cc0d000f1267a5b20de395ce8ccce9d6a6d58feff7c25f4000a22cd36968d8ac95ff234ab22ab264bb
SSL certificate
- Status
- Valid certificateTrusted by browsers and covers cisco.com. Expires in 158 days.
- Issuer
- IdenTrust (HydrantID Server CA O1)
- Common name
- www.cisco.com
- Organization
- Cisco Systems Inc.
- Protocol
- TLSv1.2
- Valid from
- September 3, 2026 at 06:56 PM UTC
- Valid to
- March 21, 2027 at 06:55 PM UTCExpires in 158 days
Covered hostnames
17 names- cisco.com
- www.cisco.com
- www1.cisco.com
- www2.cisco.com
- www3.cisco.com
- www-01.cisco.com
- www-02.cisco.com
- www-rtp.cisco.com
- www1-ss2.cisco.com
- www2-ss1.cisco.com
- www3-ss1.cisco.com
- www3-ss2.cisco.com
Show 5 more hostnames
- www.static-cisco.com
- redirect-ns.cisco.com
- cisco-images.cisco.com
- www.mediafiles-cisco.com
- z-ms77f8143bdb33fec86ff2f9551d961925.ctim.cisco.com
Certificate chain
3 certificatesCisco Systems Inc. (www.cisco.com)
Server certificate · Issued by IdenTrust (HydrantID Server CA O1) · Valid to 21 Mar 2027
IdenTrust (HydrantID Server CA O1)
Intermediate · Issued by IdenTrust (IdenTrust Commercial Root CA 1) · Valid to 12 Dec 2029
IdenTrust (IdenTrust Commercial Root CA 1)
Root · Valid to 16 Jan 2034
Serial number and fingerprints
- Serial number
- 4001A068A0DC59C339ECB14635723F2D
- SHA-256
- 8A:BA:1A:EB:BF:89:2D:D9:D1:C4:42:06:81:E6:92:BB:95:EF:50:A4:6D:72:B6:3E:EB:EF:90:79:8D:BD:13:A8
- SHA-1
- 9F:3A:B4:7A:43:CB:0B:A6:DE:2A:CB:D4:74:ED:54:7D:A5:6B:C6:53
Domain registration
Registered 14 May 1987
Expires in 212 daysRegistration data for cisco.com, from the registry's RDAP or WHOIS service.
- Registrar
- MarkMonitor Inc.IANA ID 292
- Registrant
- Cisco Technology Inc.US
- Registered
- 14 May 198739 years, 5 months old
- Expires
- 15 May 2027Expires in 212 days
- Last updated
- 13 Apr 2026
- DNSSEC
- Unsigned
- Abuse email
- abusecomplaints@markmonitor.com
- Abuse phone
- +1.2086851750
Status
Nameservers
5 nameservers- a28-64.akam.net
- a3-64.akam.net
- ns1.cisco.com
- ns2.cisco.com
- ns3.cisco.com
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