HomePrefix Lookup123.204.0.0/15

123.204.0.0/15

🇹🇼
IPv4APNICallocatedAS4780SEEDNET - Digital United Inc. RPKI Valid
CIDR
123.204.0.0/15
IP Version
IPv4
Addresses
131K
Mask
/15 (255.254.0.0)
Country
🇹🇼 Taiwan
City
Taipei
RIR
APNIC
Status
allocated
Allocated
12/28/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
123.204.0.0/15AS4780SEEDNET - Digital United Inc. Valid
RADB
6/1/2026

Covering Prefix

172 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
123.205.0.0/16AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.0.0/16AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.0.0/17AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.204.64.0/18AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.192.0/18AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.192.0/18AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.128.0/18AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.0.0/18AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.64.0/18AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.0.0/18AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.128.0/18AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.204.128.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.224.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.64.0/19AS4780SEEDNET - Digital United Inc. 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
123.204.32.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.160.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.224.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.192.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.96.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.192.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.0.0/19AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.160.0/19AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.128.0/19AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.80.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie 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
123.205.64.0/20AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.16.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.24.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.8.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.32.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.0.0/21AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.40.0/21AS18049TINP-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
123.204.230.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.232.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.237.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.238.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.250.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.252.0/24AS4780SEEDNET - 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
123.204.1.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.3.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.4.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.6.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.56.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.9.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.10.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.11.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.255.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.18.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.19.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.76.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.23.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.25.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.81.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.105.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.13.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.254.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.253.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.252.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.251.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.250.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.249.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.246.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.245.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.229.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.228.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.210.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.41.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.43.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.46.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.47.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.49.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.50.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.51.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.70.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.84.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.88.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.89.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.95.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.104.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.123.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.132.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.137.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.139.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.170.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.172.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.182.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.185.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.198.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.199.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.216.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.228.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.204.229.0/24AS4780SEEDNET - Digital United Inc. Valid—6/1/2026
123.205.19.0/24AS9919NCIC-TW - New Century InfoComm Tech Co., Ltd. Valid—6/1/2026
123.205.67.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.32.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.34.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.35.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.36.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.37.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.38.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.39.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.64.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.65.0/24AS18049TINP-TW - Taiwan Infrastructure Network Technologie Valid—6/1/2026
123.205.69.0/24AS18049TINP-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
123.205.147.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.148.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.150.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.151.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.154.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.155.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.156.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.157.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.158.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.159.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.146.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.160.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.161.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.162.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.163.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.164.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.165.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.166.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.167.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.169.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.171.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.172.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.173.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.174.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.175.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.176.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.177.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.178.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.179.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.180.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.181.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.182.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.183.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.184.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.185.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.186.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.187.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.188.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.189.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.190.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.191.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.145.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.144.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.143.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.142.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.141.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.139.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.138.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.137.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.136.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.135.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.134.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.133.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.130.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.129.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026
123.205.128.0/24AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. Valid—6/1/2026

RPKI ROAs

2
PrefixOriginMax LengthTrust Anchor
123.204.0.0/15AS4780/24apnic
123.204.0.0/15AS9919/24apnic

IRR Route Objects

1
OriginRegistryMaintainerModified
AS4780RADBMAINT-AS47804/1/2026
Origin ASN
AS4780
SEEDNET - Digital United Inc.
Geolocation
Country🇹🇼TaiwanTW
RegionTaiwan
CityTaipei
Coordinates25.0423, 121.5670 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/123.204.0.0/15

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

curl -s "https://api.ipctl.io/v1/prefix/123.204.0.0/15" | jq
External Links
RIPEstat Hurricane Electric BGP