Data as of Nov 10, 2026

221.199.82.0/23

No anonymizer space · no proxy exits in 30 days

CHINA UNICOM China169 Backbone · space held by China Unicom Ningxia province network

Announcement

221.199.0.0/17

RPKI valid

Announced by

AS4837

Type

Residential

50% of it

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
221.199.82.0/24 since Aug 2023	AS9929	Unknown	China Unicom Ningxia province network

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

512 addresses

Type	Addresses	Share	Ranges
Residential	256	50%	1
Unknown	256	50%	1

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Announced by

Covering announcement 221.199.0.0/17

Prefix: 221.199.0.0/17
Announced by: AS4837 CHINA UNICOM China169 Backbone
Type: Residential
Proxy exits: 45
Always-on exits: 2
RPKI: RPKI valid
Netname: UNICOM-NX
Registrant: China Unicom Ningxia province network
RIR: APNIC

Origin network

AS4837

Name: CHINA UNICOM China169 Backbone
Type: Internet provider
Registered: Sep 17, 2001
Domain: chinaunicom.cn
Website: www.chinaunicom.cn/
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
221.199.0.0/17	AS4837	/17	APNIC	RPKI valid

IRR

Route objects on 221.199.0.0/17

Origin	Registry	Description	Maintainer	Modified
AS4837	APNIC	CNC Group CHINA169 Ningxia Province Network	MAINT-CNCGROUP-RR	Sep 4, 2008
AS4837	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	May 25, 2016
AS4837	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023

221.199.82.0/23

Announcements

Announcements inside

Composition

Address share

Types across the prefix

Network & registry

Covering announcement 221.199.0.0/17

AS4837

Who has announced 221.199.0.0/17

Routing history

Route origin authorizations

Route objects on 221.199.0.0/17

Registration for this announcement

Abuse contact