113.21.236.0/24

AS4812 · China Telecom (Group)

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	China
Domain	cbccom.net
ASN	AS4812
Registry	APNIC
ID	CBCNET

WHOIS Details

inetnum:        113.21.236.0 - 113.21.239.255
netname:        CBCnet
descr:          Beijing Tian Wei Xin Tong technology corp. limited
descr:          Unit 901,cernet tower,Bolg 8,Tsinghua Science Prak
descr:          No.1Zhongguancun East Rd,Haidian District,Beijing
country:        CN
admin-c:        YL2243-AP
tech-c:         YL2243-AP
abuse-c:        AC1601-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-CNNIC-AP
mnt-irt:        IRT-CBCNET-CN
mnt-lower:      MAINT-CNNIC-AP
last-modified:  2023-11-28T00:56:53Z
source:         APNIC

irt:            IRT-CBCnet-CN
address:        Unit 901,cernet tower,Bolg 8,Tsinghua Science Prak,No.1Zhongguancun East Rd,
address:        Haidian District,Beijing
e-mail:         Kevin.liu@cbccom.net
abuse-mailbox:  Kevin.liu@cbccom.net
admin-c:        YL2243-AP
tech-c:         YL2243-AP
auth:           # Filtered
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-12-08T05:39:07Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        ipas@cnnic.cn is invalid
abuse-mailbox:  ipas@cnnic.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

person:         Yu Liu
nic-hdl:        YL2243-AP
e-mail:         Kevin.liu@cbccom.net
address:        Unit 901,cernet tower,Bolg 8,Tsinghua Science Prak,No.1Zhongguancun East Rd,Haidian District,Beijing
phone:          +86-010-62602988
fax-no:         +86-010-62602987
country:        CN
mnt-by:         MAINT-NEW
last-modified:  2009-05-11T06:39:29Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 113.21.0.0/16

Range	ASN	Company	Num of IPs
113.21.128.0/19	AS703	Verizon Asia Pte Limited	8,192
113.21.32.0/20	AS38835	Buroserv Australia Pty Ltd	4,096
113.21.48.0/20	AS17534	KANAZAWA CABLE TELEVISION NET CO.,LTD.	4,096
113.21.248.0/21	AS23627	UEDA CABLE VISION CO.,LTD.	2,048
113.21.224.0/22	AS56030	Voyager Internet Ltd.	1,024
113.21.228.0/22	AS45766	Triangle Services Ltd.	1,024
113.21.184.0/24	AS9584	DYXNET NET	256
113.21.243.0/24	AS38082	Reserve for KDDI	256
113.21.230.0/24	AS45766	Triangle-Client	256
113.21.231.0/24	AS45766	Triangle-Client	256
113.21.173.0/24	AS9244	DYXNET NET	256
113.21.175.0/24	AS9244	DYXNET NET	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

51 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
113.21.236.42	AS131314 CBC Tech International Limited	`3.43ms` from Shanghai, CN

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
98.64.236.216	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
62.10.114.168	AS8070 Microsoft Corporation	`0.63ms` from Boydton, US
76.234.32.72	AS7018 AT&T Enterprises, LLC	`18.35ms` from Chicago, US
116.96.248.104	AS7552 Viettel Group	`2.14ms` from Hanoi, VN
113.120.9.72	AS4134 CHINANET-BACKBONE	`5.40ms` from Jinan, CN
5.148.104.72	AS25180 Exponential-E Ltd.	`0.47ms` from London, GB
73.88.31.232	AS7922 Comcast Cable Communications, LLC	`6.33ms` from Minneapolis, US
112.80.121.56	AS4837 CHINA UNICOM China169 Backbone	`5.13ms` from Nanjing, CN
88.124.2.120	AS12322 Free SAS	`7.87ms` from Paris, FR
189.6.176.8	AS28573 Claro NXT Telecomunicacoes Ltda	`1.95ms` from Porto Alegre, BR
112.150.52.200	AS17858 LG POWERCOMM	`2.03ms` from Seoul, KR
20.53.251.120	AS8075 Microsoft Corporation	`0.69ms` from Sydney, AU
65.95.27.232	AS577 Bell Canada	`9.54ms` from Toronto, CA
39.96.153.56	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.56ms` from Zhangjiakou, CN
196.75.166.72	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.26ms` from Casablanca, MA
72.177.166.184	AS11427 Charter Communications Inc	`7.02ms` from Houston, US
31.53.214.216	AS2856 British Telecommunications PLC	`1.61ms` from London, GB
83.47.167.232	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.05ms` from Madrid, ES
34.201.93.216	AS14618 Amazon.com, Inc.	`0.43ms` from Reston, US
54.174.231.40	AS14618 Amazon.com, Inc.	`0.24ms` from Reston, US
143.110.200.56	AS14061 DigitalOcean, LLC	`0.17ms` from San Jose, US
216.223.152.8	AS12059 Internet Light and Power Inc.	`0.28ms` from Toronto, CA
91.84.79.200	AS8758 Iway AG	`1.44ms` from Zuerich, CH
72.73.32.232	AS701 Verizon Business	`6.65ms` from Ashburn, US
111.41.55.72	AS132525 HeiLongJiang Mobile Communication Company Limited	`6.63ms` from Changchun, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 113.21.236.193

traceroute to 113.21.236.193 (113.21.236.193): 64 hops max, 52 byte packets

3 [AS9498] 122.185.239.109 2.918 ms

4 [] 182.79.146.196 69.004 ms

5 [] 27.111.230.154 99.104 ms

6 *

7 *

8 *

9 *

10 *

11 *

12 [AS131314] 113.21.236.52 124.876 ms

13 [AS131314] 113.21.236.193 146.885 ms

Measurement taken from

IPinfo ProbeNet in Kolkata, IN

On December 6th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales