HomePrefix Lookup123.205.0.0/17

123.205.0.0/17

🇹🇼
CIDR
123.205.0.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇹🇼 Taiwan
City
Taichung
RIR
APNIC
Status
announced
Allocated
-

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
123.205.0.0/17AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026

Covering Prefix

41 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
123.204.0.0/15AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.0.0/16AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.0.0/18AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.64.0/18AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.32.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.64.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.96.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.112.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.80.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.64.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.24.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.0.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.8.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.16.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.32.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.40.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.48.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.56.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.81.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.56.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.76.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.0.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.15.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.105.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.19.0/24AS9919NCIC-TW - New Century InfoComm Tech Co., Ltd. Valid—6/1/2026
123.205.69.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.70.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.73.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.75.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.77.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.79.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.36.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.37.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.39.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.38.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.35.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.34.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.32.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.64.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.65.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.67.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026

RPKI ROAs

5
PrefixOriginMax LengthTrust Anchor
123.205.0.0/17AS18049/24apnic
123.205.0.0/16AS4780/24apnic
123.205.0.0/16AS9919/24apnic
123.204.0.0/15AS4780/24apnic
123.204.0.0/15AS9919/24apnic

IRR Route Objects

1
OriginRegistryMaintainerModified
AS4780RADBMAINT-AS47803/11/2026
Geolocation
Country🇹🇼TaiwanTW
RegionTaiwan
CityTaichung
GEThttps://api.ipctl.io/v1/prefix/123.205.0.0/17

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/123.205.0.0/17" | jq