Home Prefix Lookup121.58.0.0/18

121.58.0.0/18

🇨🇳

IPv4APNICannouncedAS151058CT-HAINAN - China Telecom RPKI Valid

CIDR

121.58.0.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇨🇳 China

City

Haikou

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
121.58.0.0/18	AS151058CT-HAINAN - China Telecom	Valid	RADB	6/13/2026

Covering Prefix

1 less-specific announcement

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

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
121.58.0.0/18	AS151058	/18	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS151058	RADB	MAINT-AS151058	4/16/2026

More Specific Prefixes

Prefix	Country	Status
121.58.32.0/23	🇨🇳CN	assigned
121.58.52.0/24	🇨🇳CN	assigned
121.58.36.0/24	🇨🇳CN	assigned
121.58.51.0/24	🇨🇳CN	assigned
121.58.58.0/24	🇨🇳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
121.58.5.0/24	🇨🇳CN	assigned
121.58.8.0/24	🇨🇳CN	assigned
121.58.10.0/24	🇨🇳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
121.58.24.0/24	🇨🇳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
121.58.55.0/24	🇨🇳CN	assigned
121.58.61.0/24	🇨🇳CN	assigned
121.58.6.0/24	🇨🇳CN	assigned
121.58.7.0/24	🇨🇳CN	assigned
121.58.14.0/24	🇨🇳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
121.58.57.0/24	🇨🇳CN	assigned
121.58.23.128/25	🇨🇳CN	assigned
121.58.0.0/25	🇨🇳CN	assigned
121.58.9.128/25	🇨🇳CN	assigned
121.58.1.0/25	🇨🇳CN	assigned
121.58.3.128/25	🇨🇳CN	assigned
121.58.11.0/25	🇨🇳CN	assigned
121.58.16.0/25	🇨🇳CN	assigned
121.58.3.0/25	🇨🇳CN	assigned
121.58.9.0/25	🇨🇳CN	assigned
121.58.11.128/25	🇨🇳CN	assigned
121.58.13.0/25	🇨🇳CN	assigned
121.58.23.0/25	🇨🇳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

AS151058

CT-HAINAN - China Telecom

Geolocation

Country🇨🇳ChinaCN

RegionHainan

CityHaikou

Coordinates20.0442, 110.2000 ↗

API

Open

GEThttps://api.ipctl.io/v1/prefix/121.58.0.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/121.58.0.0/18" | jq

External Links

RIPEstat Hurricane Electric BGP