AS9221 — HSBC-HK-AS HSBC HongKong

AS9221 announces 3 IPv4 prefixes covering 14,336 addresses and 3 IPv6 prefixes.

About this network

AS9221 (HSBC-HK-AS) is held by The Hongkong and Shanghai Banking Corporation Limited, the Hong Kong arm of the HSBC banking group. It is a corporate network: HSBC's own Internet-facing address space in Hong Kong, not a service sold to anyone else.

What it's used for

The routing evidence is textbook enterprise. RIS sees 33 IPv4 prefixes carrying 14,336 addresses, plus 6 IPv6 prefixes, and only 9 BGP neighbours. That ratio is the giveaway: a wholesale carrier of this size would peer with hundreds of networks, and an eyeball ISP with this much space would show many more upstreams and exchange sessions. Nine neighbours on a modest, tightly clustered address footprint is what a large multinational buys when it wants multihomed, provider-independent connectivity for its own premises and its own public services.

The space itself is concentrated in three ranges — a 161.113.192.0/19 and blocks in 203.112.80.0/21 and 27.110.72.0/21 — and it is heavily deaggregated, with most of the announcement list made up of /23s carved out of those parents. Splitting a /19 into /23s is standard practice for a bank steering traffic between data centres and for keeping specific service blocks pinned to specific upstreams.

Notable

• The 2406:0dc0:: IPv6 prefixes are APNIC-region assignments, consistent with a Hong Kong-registered holder rather than an inherited European or American allocation.
• HSBC runs separate autonomous systems in other regions; this one is the Hong Kong entity's network and should not be read as covering the whole group.

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

Announced prefixes

• 27.110.72.0/21
• 161.113.192.0/19
• 203.112.80.0/20
• 2406:dc0:235e::/47
• 2406:dc0:8850::/47
• 2406:dc0:88ca::/47

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS9381 HKBN Enterprise Solutions HK Limited
• AS3491 PCCW Global (HK) Ltd.
• AS4635 Hong Kong Internet Exchange--Route Server 1
• AS10103 HK Broadband Network Ltd.
• AS24482 SG.GS
• AS9930 TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS9381 HKBN Enterprise Solutions HK Limited
• AS3491 PCCW Global (HK) Ltd.
• AS4635 Hong Kong Internet Exchange--Route Server 1
• AS10103 HK Broadband Network Ltd.
• AS24482 SG.GS
• AS9930 TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia

Internet exchanges

• Hong Kong Internet Exchange — Hong Kong, China