Home Prefix Lookup121.58.0.0/17

121.58.0.0/17

🇨🇳

IPv4APNICallocatedAS4134CHINANET-BACKBONE - No.31,Jin-rong StreetNo ROA

CIDR

121.58.0.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇨🇳 China

City

Haikou

RIR

APNIC

Status

allocated

Allocated

5/31/2006

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
121.58.0.0/17	AS4134CHINANET-BACKBONE - No.31,Jin-rong Street	No ROA	RADB	6/13/2026

Covering Prefix

10 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
121.58.0.0/18	AS151058CT-HAINAN - China Telecom	Valid	—	6/13/2026
121.58.64.0/18	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.96.0/19	AS4809CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network	No ROA	—	6/13/2026
121.58.104.0/21	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.96.0/21	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.112.0/21	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.120.0/21	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.116.0/22	AS151058CT-HAINAN - China Telecom	No ROA	—	6/13/2026
121.58.116.0/23	AS4809CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network	Valid	—	6/13/2026
121.58.126.0/23	AS4809CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network	Valid	—	6/13/2026

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4134	RADB	MAINT-CT-GNOC	11/13/2023
AS151058	RADB	MAINT-AS151058	6/25/2025

More Specific Prefixes

Prefix	Country	Status
121.58.92.0/22	🇨🇳CN	assigned
121.58.68.0/22	🇨🇳CN	assigned
121.58.72.0/22	🇨🇳CN	assigned
121.58.100.0/22	🇨🇳CN	assigned
121.58.88.0/22	🇨🇳CN	assigned
121.58.80.0/22	🇨🇳CN	assigned
121.58.84.0/22	🇨🇳CN	assigned
121.58.76.0/22	🇨🇳CN	assigned
121.58.98.0/23	🇨🇳CN	assigned
121.58.32.0/23	🇨🇳CN	assigned
121.58.66.0/23	🇨🇳CN	assigned
121.58.55.0/24	🇨🇳CN	assigned
121.58.61.0/24	🇨🇳CN	assigned
121.58.6.0/24	🇨🇳CN	assigned
121.58.7.0/24	🇨🇳CN	assigned
121.58.10.0/24	🇨🇳CN	assigned
121.58.52.0/24	🇨🇳CN	assigned
121.58.64.0/24	🇨🇳CN	assigned
121.58.36.0/24	🇨🇳CN	assigned
121.58.51.0/24	🇨🇳CN	assigned
121.58.2.0/24	🇨🇳CN	assigned
121.58.4.0/24	🇨🇳CN	assigned
121.58.18.0/24	🇨🇳CN	assigned
121.58.27.0/24	🇨🇳CN	assigned
121.58.28.0/24	🇨🇳CN	assigned
121.58.47.0/24	🇨🇳CN	assigned
121.58.57.0/24	🇨🇳CN	assigned
121.58.59.0/24	🇨🇳CN	assigned
121.58.60.0/24	🇨🇳CN	assigned
121.58.62.0/24	🇨🇳CN	assigned
121.58.63.0/24	🇨🇳CN	assigned
121.58.97.0/24	🇨🇳CN	assigned
121.58.5.0/24	🇨🇳CN	assigned
121.58.8.0/24	🇨🇳CN	assigned
121.58.24.0/24	🇨🇳CN	assigned
121.58.12.0/24	🇨🇳CN	assigned
121.58.15.0/24	🇨🇳CN	assigned
121.58.26.0/24	🇨🇳CN	assigned
121.58.39.0/24	🇨🇳CN	assigned
121.58.42.0/24	🇨🇳CN	assigned
121.58.46.0/24	🇨🇳CN	assigned
121.58.53.0/24	🇨🇳CN	assigned
121.58.58.0/24	🇨🇳CN	assigned
121.58.65.0/24	🇨🇳CN	assigned
121.58.14.0/24	🇨🇳CN	assigned
121.58.17.0/24	🇨🇳CN	assigned
121.58.19.0/24	🇨🇳CN	assigned
121.58.20.0/24	🇨🇳CN	assigned
121.58.21.0/24	🇨🇳CN	assigned
121.58.22.0/24	🇨🇳CN	assigned
121.58.25.0/24	🇨🇳CN	assigned
121.58.29.0/24	🇨🇳CN	assigned
121.58.30.0/24	🇨🇳CN	assigned
121.58.31.0/24	🇨🇳CN	assigned
121.58.34.0/24	🇨🇳CN	assigned
121.58.35.0/24	🇨🇳CN	assigned
121.58.37.0/24	🇨🇳CN	assigned
121.58.40.0/24	🇨🇳CN	assigned
121.58.41.0/24	🇨🇳CN	assigned
121.58.44.0/24	🇨🇳CN	assigned
121.58.45.0/24	🇨🇳CN	assigned
121.58.49.0/24	🇨🇳CN	assigned
121.58.50.0/24	🇨🇳CN	assigned
121.58.54.0/24	🇨🇳CN	assigned
121.58.56.0/24	🇨🇳CN	assigned
121.58.9.0/25	🇨🇳CN	assigned
121.58.11.128/25	🇨🇳CN	assigned
121.58.13.0/25	🇨🇳CN	assigned
121.58.11.0/25	🇨🇳CN	assigned
121.58.23.128/25	🇨🇳CN	assigned
121.58.0.0/25	🇨🇳CN	assigned
121.58.3.0/25	🇨🇳CN	assigned
121.58.16.0/25	🇨🇳CN	assigned
121.58.104.0/25	🇨🇳CN	assigned
121.58.104.128/25	🇨🇳CN	assigned
121.58.3.128/25	🇨🇳CN	assigned
121.58.23.0/25	🇨🇳CN	assigned
121.58.1.0/25	🇨🇳CN	assigned
121.58.9.128/25	🇨🇳CN	assigned
121.58.105.0/26	🇨🇳CN	assigned
121.58.1.128/26	🇨🇳CN	assigned
121.58.1.192/27	🇨🇳CN	assigned
121.58.1.224/27	🇨🇳CN	assigned

Origin ASN

AS4134

CHINANET-BACKBONE - No.31,Jin-rong Street

Geolocation

Country🇨🇳ChinaCN

RegionHainan

CityHaikou

Coordinates20.0442, 110.2000 ↗

API

Open

GEThttps://api.ipctl.io/v1/prefix/121.58.0.0/17

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

curl -s "https://api.ipctl.io/v1/prefix/121.58.0.0/17" | jq

External Links

RIPEstat Hurricane Electric BGP