$ query “AS4657” --type=asn → 1 result(s)

AS4657 · STARHUB-INTERNET

Starhub Ltd.

AS4657 is owned by Starhub Ltd. and is a major transit provider, based in Singapore. The system announces a solid 716 288 IPv4 addresses, including a /15, and supports IPv6. Its primary geographic footprint is in Singapore, with additional presence in Australia and the United States.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #42 by Reach — Top 100 by customer cone size
  • #2 in Singapore — Top 10 by reach within country

Basic Information

Country
🇸🇬 Singapore
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
April 19, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
159 / 30
IPv6 Prefixes (raw / aggregated)
19 / 1
IPv4 Addresses
716 288
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/30
Geolocated Countries
🇸🇬 Singapore (1 348 352 IPs), 🇦🇺 Australia (16 384 IPs), 🇺🇸 United States (2 560 IPs)
Prefix Changed
April 07, 2026

Reputation

Reputation
Good — 3 flagged IPs out of 716 288 total (0.00%)

Connectivity Summary

Upstream Providers
9 upstreams providing transit
Peers
391 networks exchanging traffic without transit
Downstream Customers
125 downstreams buying transit
Unclassified
4 unclassified BGP neighbors
Degree
529 unique BGP neighbors
Reach
41 738 networks in customer cone

Upstream Providers (9)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3549 — LVLT-3549
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS23764 — CTGNET
  • AS4637 — ASN-TELSTRA-GLOBAL
  • AS6453 — AS6453 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (159 total)

  • 203.116.0.0/15 (131 072 addresses (/15 prefix))
  • 171.0.0.0/15 (131 072 addresses (/15 prefix))
  • 182.55.0.0/16 (65 536 addresses (/16 prefix))
  • 171.207.0.0/16 (65 536 addresses (/16 prefix))
  • 101.127.0.0/16 (65 536 addresses (/16 prefix))
  • 122.11.128.0/17 (32 768 addresses (/17 prefix))
  • 183.90.0.0/17 (32 768 addresses (/17 prefix))
  • 39.109.128.0/17 (32 768 addresses (/17 prefix))
  • 182.19.128.0/17 (32 768 addresses (/17 prefix))
  • 61.8.192.0/18 (16 384 addresses (/18 prefix))
  • 203.118.0.0/18 (16 384 addresses (/18 prefix))
  • 111.223.64.0/18 (16 384 addresses (/18 prefix))
  • 113.10.64.0/18 (16 384 addresses (/18 prefix))
  • 117.20.128.0/18 (16 384 addresses (/18 prefix))
  • 27.54.0.0/18 (16 384 addresses (/18 prefix))
  • 124.155.192.0/19 (8 192 addresses (/19 prefix))
  • 202.156.32.0/19 (8 192 addresses (/19 prefix))
  • 202.156.16.0/20 (4 096 addresses (/20 prefix))
  • 45.65.0.0/22 (1 024 addresses (/22 prefix))
  • 23.206.180.0/22 (1 024 addresses (/22 prefix))
  • 103.28.208.0/22 (1 024 addresses (/22 prefix))
  • 103.17.144.0/22 (1 024 addresses (/22 prefix))
  • 23.212.92.0/22 (1 024 addresses (/22 prefix))
  • 43.227.228.0/23 (512 addresses (/23 prefix))
  • 38.46.202.0/23 (512 addresses (/23 prefix))
  • 103.254.252.0/23 (512 addresses (/23 prefix))
  • 202.156.4.0/24 (256 addresses (/24 prefix))
  • 202.156.10.0/24 (256 addresses (/24 prefix))
  • 103.254.254.0/24 (256 addresses (/24 prefix))
  • 103.149.23.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (19 total)

  • 2406:3000::/30