Cisco Webex LLC

Data as of 2026-08-09
BGP inherited
Cluster stats
Netblocks247 · 418,824 IPv4 addresses
IPv6 62 prefixes (largest 2607:fcf0::/32)
Registered in United States (171) · Singapore (11) · Netherlands (10)
Cluster ID218143654
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 15 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

7 weekly snapshots · JSON
255 +20 netblocks since 2026-07-05
2026-07-05 peak 269 2026-08-09

IP Ranges (247)

showing 50 of 247 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
3.25.56.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
3.101.70.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
8.38.216.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
8.244.137.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
8.245.11.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
18.132.77.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
18.141.157.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
18.156.86.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
18.181.18.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
18.181.204.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
18.230.160.0/25 Cisco Webex LLC ARIN ASSIGNMENT ● high
23.89.0.0/16 Cisco Webex LLC ARIN DIRECT ALLOCATION ● high
23.89.0.0/18 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.0.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.16.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.32.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.33.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.44.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.48.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.64.0/18 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.64.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.80.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.96.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.112.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.120.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.128.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.144.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.154.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.160.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.176.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.184.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.192.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
23.89.208.0/20 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.192.0/18 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.250.0/23 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.250.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.251.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.252.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.254.0/23 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.254.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
62.109.255.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
64.68.96.0/19 Cisco Webex LLC BGP ANNOUNCED ● high
64.68.104.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
64.68.120.0/21 Cisco Webex LLC BGP ANNOUNCED ● high
66.114.160.0/20 Cisco Webex LLC ARIN DIRECT ALLOCATION ● high
66.163.32.0/19 Cisco Webex LLC BGP ANNOUNCED ● high
66.163.52.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
66.163.53.0/24 Cisco Webex LLC BGP ANNOUNCED ● high
66.163.56.0/22 Cisco Webex LLC BGP ANNOUNCED ● high
69.26.160.0/20 Cisco Webex LLC BGP ANNOUNCED ● high

IPv6 ranges (62)

showing the 15 largest allocations
CIDR
2607:fcf0::/32
2402:2500:100::/40
2402:2500:200::/40
2402:2500:300::/40
2402:2500:400::/40
2402:2500:500::/40
2607:fcf0:100::/40
2607:fcf0:200::/40
2607:fcf0:300::/40
2607:fcf0:400::/40
2607:fcf0:500::/40
2607:fcf0:700::/40
2607:fcf0:9000::/40
2607:fcf0:a00::/40
2a00:a640:100::/40

Domains hosted in this network

what's this?
webex.com wbx2.com ciscospark.com as13445.net

Network trust

what's this?
RPKI hygiene: B how networks compare →
82.7% of checked blocks have valid RPKI ROA coverage (211 of 255)
Possible discrepancies (5)

These blocks are registered to Cisco Webex LLC but cryptographically authorized for a different, unrelated network (3 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2607:fcf0:20a7::/48 /48 authorized for AS8987 — Amazon Technologies Inc.
144.196.0.0/16 /16 authorized for AS198949 — Radware Ltd
66.163.32.0/19 /19 authorized for AS198949 — Radware Ltd
66.163.32.0/19 /19 authorized for AS198949 — Radware Ltd
139.177.67.0/24 /24 authorized for AS35180 — Broadsoft LTD

NIC Handles

AS13445 AS21534 AS26152 AS35180 AS399937 DUMY-RIPE DUMY-RIPE EQUINIX-FULFIL-MNT EQUINIX-MNT NO86-ARIN NO86-ARIN NO86-ARIN +3 more