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

AS4657 · STARHUB-INTERNET

Starhub Ltd.

AS4657 belongs to Starhub Ltd. and is a major transit provider, based in Singapore. The system announces a solid 715 264 IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to Singapore, with additional presence in Australia and the United States, and smaller footprints in 2 additional countries.

Top 5% — Top 5% of all autonomous systems by reach and degree
#38 by Reach — Top 100 by customer cone size
#3 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: September 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated): 209 / 29
IPv6 Prefixes (raw / aggregated): 18 / 1
IPv4 Addresses: 715 264
Largest IPv4 Prefix: /15 (131 072 addresses)
Largest IPv6 Prefix: /30
Geolocated Countries: 🇸🇬 Singapore (1 345 792 IPs), 🇦🇺 Australia (33 280 IPs), 🇺🇸 United States (1 536 IPs) and 2 more
Prefix Changed: August 19, 2026

Reputation

Reputation: Good — 1 flagged IPs out of 715 264 total (0.00%)

Connectivity Summary

Upstream Providers: 9 upstreams providing transit
Peers: 357 networks exchanging traffic without transit
Downstream Customers: 124 downstreams buying transit
Unclassified: 4 unclassified BGP neighbors
Degree: 494 unique BGP neighbors
Reach: 43 906 networks in customer cone

Upstream Providers (9)

AS3356 — LEVEL3 (Tier-1 transit)
AS174 — COGENT (Tier-1 transit)
AS9002 — RETN-AS
AS1299 — TWELVE99 (Tier-1 transit)
AS2914 — NTT-DATA-2914 (Tier-1 transit)
AS23764 — CTGNET
AS6453 — AS6453 (Tier-1 transit)
AS4637 — ASN-TELSTRA-GLOBAL
AS17645 — NTT-SG-AP

Prefix Lists

IPv4 Prefixes (209 total)

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

IPv6 Prefixes (18 total)

2406:3000::/30