$ query “AS10099” --type=asn → 1 result(s)

AS10099 · UNICOM-GLOBAL

China Unicom (Hong Kong) Operations Limited

AS10099 belongs to China Unicom (Hong Kong) Operations Limited and is a major transit provider, registered in Hong Kong SAR China. The system announces a respectable 34 560 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Hong Kong SAR China, with additional presence in the United Kingdom and Germany, and smaller footprints in 10 additional countries.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #69 by Reach — Top 100 by customer cone size
  • #69 by Degree — Top 100 by unique BGP neighbor count
  • #5 in Hong Kong SAR China — Top 10 by reach within country

Basic Information

Country
🇭🇰 Hong Kong SAR China
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
May 01, 2026
Last Seen
May 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
99 / 36
IPv6 Prefixes (raw / aggregated)
3 / 1
IPv4 Addresses
34 560
Largest IPv4 Prefix
/19 (8 192 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇭🇰 Hong Kong SAR China (48 128 IPs), 🇬🇧 United Kingdom (2 816 IPs), 🇩🇪 Germany (2 560 IPs) and 10 more
Prefix Changed
April 27, 2026

Reputation

Reputation
Good — 4 flagged IPs out of 34 560 total (0.01%)

Connectivity Summary

Upstream Providers
9 upstreams providing transit
Peers
1 791 networks exchanging traffic without transit
Downstream Customers
63 downstreams buying transit
Unclassified
12 unclassified BGP neighbors
Degree
1 875 unique BGP neighbors
Reach
48 800 networks in customer cone

Upstream Providers (9)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS20485 — TRANSTELECOM
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS4637 — ASN-TELSTRA-GLOBAL
  • AS6453 — AS6453 (Tier-1 transit)
  • AS25818 — CMCNETWORKS

Prefix Lists

IPv4 Prefixes (99 total)

  • 203.160.64.0/19 (8 192 addresses (/19 prefix))
  • 162.219.32.0/21 (2 048 addresses (/21 prefix))
  • 119.252.136.0/21 (2 048 addresses (/21 prefix))
  • 202.77.16.0/21 (2 048 addresses (/21 prefix))
  • 103.107.88.0/22 (1 024 addresses (/22 prefix))
  • 162.245.124.0/22 (1 024 addresses (/22 prefix))
  • 43.251.12.0/22 (1 024 addresses (/22 prefix))
  • 103.1.64.0/22 (1 024 addresses (/22 prefix))
  • 103.69.184.0/22 (1 024 addresses (/22 prefix))
  • 43.255.168.0/22 (1 024 addresses (/22 prefix))
  • 162.219.84.0/22 (1 024 addresses (/22 prefix))
  • 118.26.144.0/22 (1 024 addresses (/22 prefix))
  • 43.252.84.0/22 (1 024 addresses (/22 prefix))
  • 162.255.48.0/22 (1 024 addresses (/22 prefix))
  • 103.214.64.0/22 (1 024 addresses (/22 prefix))
  • 46.19.164.0/22 (1 024 addresses (/22 prefix))
  • 162.247.4.0/22 (1 024 addresses (/22 prefix))
  • 103.228.68.0/23 (512 addresses (/23 prefix))
  • 103.239.176.0/23 (512 addresses (/23 prefix))
  • 103.86.14.0/23 (512 addresses (/23 prefix))
  • 118.26.148.0/23 (512 addresses (/23 prefix))
  • 103.77.22.0/23 (512 addresses (/23 prefix))
  • 162.219.82.0/23 (512 addresses (/23 prefix))
  • 118.26.156.0/23 (512 addresses (/23 prefix))
  • 46.19.162.0/23 (512 addresses (/23 prefix))
  • 103.77.20.0/24 (256 addresses (/24 prefix))
  • 118.26.158.0/24 (256 addresses (/24 prefix))
  • 162.219.80.0/24 (256 addresses (/24 prefix))
  • 118.26.155.0/24 (256 addresses (/24 prefix))
  • 118.26.153.0/24 (256 addresses (/24 prefix))
  • 103.229.246.0/24 (256 addresses (/24 prefix))
  • 103.228.70.0/24 (256 addresses (/24 prefix))
  • 103.203.184.0/24 (256 addresses (/24 prefix))
  • 38.69.152.0/24 (256 addresses (/24 prefix))
  • 61.14.200.0/24 (256 addresses (/24 prefix))
  • 206.52.7.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (3 total)

  • 2401:8a00::/32