221.10.25.0/24 - bgp.tools

221.10.25.0/24

Originated by AS4837
AS Name: China Unicom Backbone

Overview
Connectivity
Whois
Validation

Registered on: 20 Jan 2003 (23 years old)

Registered to: A92FB131 (apnic)

Prefix status: Active, Allocated under APNIC

Size of prefix: 1 /24's

Less Specific Announcements

	Prefix	Description
	221.10.0.0/16	China Unicom SiChuan province network

Upstreams

AS7018 - AT&T Enterprises, LLC
AS3491 - PCCW Global (HK) Ltd.
AS12956 - Telxius (Telefonica Global)
AS702 - Verizon Business - EMEA
AS701 - Verizon Business
AS6830 - Liberty Global Europe Holding B.V.
AS3356 - Lumen (Level 3)
AS6762 - Telecom Italia Sparkle (Seabone)

Chart Display Options

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS7018	AT&T Enterprises, LLC
	AS3491	PCCW Global (HK) Ltd.
	AS12956	Telxius (Telefonica Global)
	AS702	Verizon Business - EMEA
	AS701	Verizon Business
	AS6830	Liberty Global Europe Holding B.V.
	AS3356	Lumen (Level 3)
	AS6762	Telecom Italia Sparkle (Seabone)
	AS6453	TATA Communications (America) Inc
	AS5511	Orange S.A.
	AS2914	NTT America, Inc.
	AS3257	GTT Communications Inc.
	AS3320	Deutsche Telekom AG
	AS1299	Arelion (fka. Telia Carrier)
	AS174	Cogent Communications, LLC

Peers

	ASN	Description
	AS41327	Fiber Telecom S.p.A.
	AS9009	M247 Europe SRL
	AS41378	Kirino LLC
	AS3786	LG DACOM Corporation
	AS8529	Zain Omantel International FZ-LLC
	AS20485	TransTeleCom JSC
	AS32590	Valve Corporation
	AS3491	PCCW Global (HK) Ltd.
	AS51184	Fonira Telekom GmbH
	AS680	Deutsches Forschungsnetz (DFN)
	AS62255	BiMajLink d.o.o.
	AS2516	KDDI Corporation
	AS12779	IT.Gate S.p.A.
	AS9808	China Mobile Backbone
	AS2119	Telenor Norge AS
	AS4637	Telstra International Limited
	AS7018	AT&T Enterprises, LLC
	AS1273	Vodafone Group PLC
	AS3292	TDC Holding A/S
	AS45629	JasTel Network International Gateway
	AS4230	Claro (Embratel)
	AS8220	COLT
	AS6327	Shaw Communications
	AS8455	atom86 BV
	AS4134	China Telecom Backbone
	AS6774	BICS (Belgacom)
	AS9929	China Unicom Industrial Internet Backbone
	AS7922	Comcast Cable Communications, LLC
	AS20495	We Dare B.V.
	AS3303	Swisscom (Schweiz) AG
	AS37468	Angola Cables
	AS30781	Free Pro SAS
	AS2497	Internet Initiative Japan Inc.
	AS7195	EdgeUno
	AS3462	HiNet (Chunghwa Telecom)
	AS7473	Singapore Telecommunications Ltd
	AS58299	Openfactory GmbH
	AS12956	Telxius (Telefonica Global)
	AS33891	Core-Backbone GmbH
	AS701	Verizon Business
	AS6830	Liberty Global Europe Holding B.V.
	AS3399	Obenet AB
	AS17676	SoftBank Corp.
	AS3356	Lumen (Level 3)
	AS6762	Telecom Italia Sparkle (Seabone)
	AS6461	Zayo Bandwidth
	AS6453	TATA Communications (America) Inc
	AS5511	Orange S.A.
	AS2914	NTT America, Inc.
	AS6939	Hurricane Electric LLC
	AS702	Verizon Business - EMEA
	AS5405	Inter.link GmbH
	AS3257	GTT Communications Inc.
	AS3320	Deutsche Telekom AG
	AS1299	Arelion (fka. Telia Carrier)
	AS174	Cogent Communications, LLC

Last Update: 2026-04-14T03:31:33Z UTC

IRR Databases

IRR	Expected ASN
apnic	AS4837	Show Raw route: 221.10.25.0/24 descr: China Unicom China169 Network country: CN origin: AS4837 mnt-by: MAINT-CNCGROUP-RR last-modified: 2017-05-05T07:18:04Z source: APNIC
nttcom	AS4837	Show Raw route: 221.10.25.0/24 descr: CMI IP Transit origin: AS4837 admin-c: MAINT-CMI-INT-HK tech-c: MAINT-CMI-INT-HK mnt-by: MAINT-CMI-INT-HK changed: qas_support@cmi.chinamobile.com 20160525 source: NTTCOM
radb	AS4837	Show Raw route: 221.10.25.0/24 descr: CMI (Customer Route) origin: AS4837 mnt-by: MAINT-AS58453 changed: qas_support@cmi.chinamobile.com 20160525 source: RADB last-modified: 2023-11-13T15:49:14Z

IRR

Expected ASN

apnic

AS4837

Show Raw

route:          221.10.25.0/24
descr:          China Unicom China169 Network
country:        CN
origin:         AS4837
mnt-by:         MAINT-CNCGROUP-RR
last-modified:  2017-05-05T07:18:04Z
source:         APNIC

nttcom

AS4837

Show Raw

route:          221.10.25.0/24
descr:          CMI IP Transit
origin:         AS4837
admin-c:        MAINT-CMI-INT-HK
tech-c:         MAINT-CMI-INT-HK
mnt-by:         MAINT-CMI-INT-HK
changed:        qas_support@cmi.chinamobile.com 20160525
source:         NTTCOM

radb

AS4837

Show Raw

route:          221.10.25.0/24
descr:          CMI  (Customer Route)
origin:         AS4837
mnt-by:         MAINT-AS58453
changed:        qas_support@cmi.chinamobile.com 20160525
source:         RADB
last-modified:  2023-11-13T15:49:14Z

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Less Specific Announcements

Upstreams

Upstreams

Peers

IRR Databases