$ query “AS9505” --type=asn → 1 result(s)
AS9505 · TWGATE-AP
Chunghwa Telecom Co. Ltd.
AS9505 belongs to Chunghwa Telecom Co. Ltd. and is a mid-size transit provider, based in Taiwan. The system announces a respectable 24 576 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Taiwan, with additional presence in the United States and Singapore.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #27 by Reach — Top 100 by customer cone size
- #1 in Taiwan — Top 10 by reach within country
Basic Information
- Country
- 🇹🇼 Taiwan
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- June 22, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 34 / 8
- IPv6 Prefixes (raw / aggregated)
- 9 / 2
- IPv4 Addresses
- 24 576
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇹🇼 Taiwan (31 760 IPs), 🇺🇸 United States (2 048 IPs), 🇸🇬 Singapore (64 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 5 upstreams providing transit
- Peers
- 164 networks exchanging traffic without transit
- Downstream Customers
- 28 downstreams buying transit
- Unclassified
- 6 unclassified BGP neighbors
- Degree
- 203 unique BGP neighbors
- Reach
- 45 490 networks in customer cone
Upstream Providers (5)
Prefix Lists
IPv4 Prefixes (34 total)
- 175.41.48.0/20 (4 096 addresses (/20 prefix))
- 175.111.224.0/20 (4 096 addresses (/20 prefix))
- 203.78.176.0/20 (4 096 addresses (/20 prefix))
- 203.160.224.0/20 (4 096 addresses (/20 prefix))
- 66.171.112.0/21 (2 048 addresses (/21 prefix))
- 175.111.240.0/21 (2 048 addresses (/21 prefix))
- 208.70.200.0/21 (2 048 addresses (/21 prefix))
- 220.128.48.0/21 (2 048 addresses (/21 prefix))
IPv6 Prefixes (9 total)
- 2001:b200::/32
- 2606:c00::/32