AS18988 — CITYWEST-CORP

Network type: residential

AS18988 announces 10 IPv4 prefixes covering 41,216 addresses and 1 IPv6 prefixes.

About this network

CITYWEST-CORP is the autonomous system for City West Cable & Telephone Corp., a Canadian cable and telecommunications provider.

What it's used for

• The address space carries residential customer traffic, evidenced by reverse DNS entries such as dhcp.ftth.smtr.citywest.ca and dhcp.cmts.trrc.citywest.ca, indicating Fiber to the Home (FTTH) and Cable Modem Termination System (CMTS) infrastructure.
• The AS announces 41,216 IPv4 addresses across 17 prefixes and 1 IPv6 prefix, while maintaining 18 observed routing neighbours; this high address-to-neighbour ratio is characteristic of an access or eyeball network rather than a transit provider.

Notable

• All registrants for the largest prefixes, including CITYWEST-BLK3-CA and CITY-WEST-CGNT-NET-1, are consistently listed as City West Cable & Telephone Corp., aligning perfectly with the AS holder.
• The inventory consists of a mix of larger /19 and /20 blocks alongside numerous smaller /22 and /24 allocations, reflecting a segmented internal estate for different service regions or technologies.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 23.132.176.0/24
• 24.244.64.0/20
• 38.158.0.0/19
• 69.176.160.0/19
• 147.160.40.0/22
• 162.218.84.0/22
• 198.54.212.0/22
• 199.127.172.0/22
• 199.247.224.0/19
• 209.145.96.0/19
• 2604:ef00::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS6461 Zayo Bandwidth
• AS22652 Videotron Ltee
• AS394256 Tech Futures Interactive Inc.
• AS24482 SG.GS
• AS3130 RGnet OU
• AS9002 RETN Limited
• AS34927 iFog GmbH

Downstream networks

• AS32204 KPU Telecommunications
• AS398157 TECH NORTH SOLUTIONS INC
• AS27256 Cybernet Communications Ltd
• AS54904 Evolve Communications Inc

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS32204 KPU Telecommunications
• AS174 Cogent Communications, LLC
• AS6461 Zayo Bandwidth
• AS22652 Videotron Ltee
• AS394256 Tech Futures Interactive Inc.
• AS24482 SG.GS
• AS3130 RGnet OU
• AS27256 Cybernet Communications Ltd
• AS398157 TECH NORTH SOLUTIONS INC
• AS54904 Evolve Communications Inc
• AS9002 RETN Limited
• AS34927 iFog GmbH

Internet exchanges

• Seattle Internet Exchange — Seattle, United States
• YYCIX Calgary Internet Exchange — Calgary, Canada
• Vancouver Internet Exchange — Vancouver, Canada