AS10118 — HTCL-IAS-HK-AP Hutchison Telephone Company Limited

Network type: mobile

AS10118 announces 12 IPv4 prefixes covering 43,008 addresses and 1 IPv6 prefixes.

About this network

HTCL-IAS-HK-AP is Hutchison Telephone Company Limited, the operating company behind 3 Hong Kong — the CK Hutchison mobile carrier with roughly three million subscribers and about a fifth of the Hong Kong mobile market. The IAS in the handle stands for Internet Access Service: this is the AS that carries 3's mobile data customers to the internet.

What it's used for

Handset and mobile-broadband traffic. The AS announces 79 IPv4 prefixes totalling 45,056 addresses plus 18 IPv6 prefixes, the latter a set of large /36s out of 2407:3100::/32. That IPv6 profile is itself a mobile tell: cellular cores hand every attached device a v6 prefix, so operators carve their allocation into many large chunks per region and per APN, while a fixed enterprise would have no use for eighteen /36s.

Notable

This is a mobile eyeball network, and the ratio of users to addresses is the reason it looks smaller than it is. Roughly 45,000 public addresses against millions of subscribers only works because mobile data is delivered behind large-scale carrier NAT, with thousands of handsets sharing each public IPv4 address. The 19 observed BGP neighbours confirm the role from the other side: an eyeball carrier buys transit and peers locally, whereas a wholesale transit network at this size would be seen with hundreds of neighbours.

Interesting

3 Hong Kong splits its estate across more than one AS. Its legacy WAP gateway space sits separately in AS10116, which is why two adjacent AS numbers carry the same holder name.

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

Announced prefixes

• 117.103.144.0/20
• 124.217.128.0/18
• 180.188.128.0/18
• 202.45.89.0/24
• 202.45.90.0/23
• 202.45.92.0/22
• 203.145.75.0/24
• 203.145.79.0/24
• 203.145.80.0/23
• 203.145.83.0/24
• 203.145.84.0/22
• 203.145.88.0/21
• 2407:3100::/32

Upstream networks

• AS9304 HGC Global Communications Limited
• AS6939 Hurricane Electric LLC
• AS10103 HK Broadband Network Ltd.
• AS4635 Hong Kong Internet Exchange--Route Server 1
• AS24482 SG.GS
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS9002 RETN Limited
• AS8359 MTS PJSC
• AS35280 F5 Networks SARL

Downstream networks

• AS17794 Hutchison Telephone Company Limited
• AS14789 Cloudflare, Inc.

Adjacent networks

• AS9304 HGC Global Communications Limited
• AS6939 Hurricane Electric LLC
• AS17794 Hutchison Telephone Company Limited
• AS10103 HK Broadband Network Ltd.
• AS4635 Hong Kong Internet Exchange--Route Server 1
• AS24482 SG.GS
• AS14789 Cloudflare, Inc.
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS9002 RETN Limited
• AS8359 MTS PJSC
• AS35280 F5 Networks SARL

Internet exchanges

• Hong Kong Internet Exchange — Hong Kong, China
• Equinix Internet Exchange Hong Kong — Hong Kong, China