123.151.0.0/21

AS17638 · ASN for TIANJIN Provincial Net of CT

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

Summary

Country	China
Domain	cn.net
ASN	AS17638
Parent Range	123.150.0.0/15
Registry	APNIC
ID	TIANJIN-DINGSHENG-LTD

WHOIS Details

inetnum:        123.151.0.0 - 123.151.15.255
netname:        TIANJIN-DINGSHENG-LTD
descr:          DINGSHENG-LTD
descr:          TIANJIN CITY
country:        CN
admin-c:        AT370-AP
tech-c:         AT370-AP
mnt-by:         MAINT-CHINANET-TJ
status:         ASSIGNED NON-PORTABLE
changed:        ipadmin@north.cn.net 20080321
source:         APNIC

person:         admin tjtele
nic-hdl:        AT370-AP
e-mail:         tjipback@yahoo.com
address:        No.11 LIUJING ROAD ,HEDONG ,TIANJIN,CHINA
phone:          +86-22-85580499
fax-no:         +86-22-85580970
country:        CN
changed:        ipadmin@north.cn.net 20060508
changed:        zhengzm@gsta.com 20140401
mnt-by:         MAINT-CHINANET-TJ
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 123.151.0.0/21

Range	ASN	Company	Num of IPs
123.150.0.0/15	AS17638	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.150.0.0/15	AS4809	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.150.0.0/15	AS58542	CHINANET TIANJIN PROVINCE NETWORK	131,072

Nearby Ranges

BGP prefixes that overlap with 123.151.0.0/16

Range	ASN	Company	Num of IPs
123.150.0.0/15	AS17638	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.150.0.0/15	AS4809	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.150.0.0/15	AS58542	CHINANET TIANJIN PROVINCE NETWORK	131,072
123.151.48.0/20	AS58542	GUOXINBEILIN-LTD	4,096
123.151.96.0/20	AS58542	GUOXINBEILIN-LTD	4,096
123.151.128.0/21	AS17638	GUOXINBEILIN-LTD	2,048
123.151.152.0/22	AS58542	HAOWEIGAOKE-LTD	1,024
123.151.92.0/22	AS58542	JUNDETONGXUN-LTD	1,024
123.151.148.0/22	AS58542	HAOWEIGAOKE-LTD	1,024
123.151.146.0/24	AS17638	XINXIGANG-LTD	256
123.151.21.0/24	AS17638	TIANJINDAXUE-SCHOOL	256
123.151.144.0/24	AS58542	TIANJINCHANGKUAN-LTD	256
123.151.147.0/24	AS17638	HAOWEIGAOKE-LTD	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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
20.83.155.37	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
200.117.49.69	AS7303 Telecom Argentina S.A.	`1.55ms` from Buenos Aires, AR
213.130.104.213	AS8781 Ooredoo Q.S.C.	`0.22ms` from Doha, QA
142.68.87.133	AS855 Bell Canada	`6.01ms` from Fredericton, CA
198.232.118.197	AS1828 Unitas Global	`0.32ms` from London, GB
82.117.94.37	AS62240 Clouvider	`0.22ms` from Los Angeles, US
62.23.190.165	AS8220 COLT Technology Services Group Limited	`0.71ms` from Milan, IT
191.242.217.5	AS263482 Megalink Servicos Ltda	`16.65ms` from Osasco, BR
78.44.66.197	AS16019 Vodafone Czech Republic a.s.	`0.54ms` from Prague, CZ
109.80.172.69	AS5610 O2 Czech Republic, a.s.	`5.40ms` from Prague, CZ
112.238.108.117	AS4837 CHINA UNICOM China169 Backbone	`7.53ms` from Qingdao, CN
175.249.126.5	AS4766 Korea Telecom	`7.15ms` from Seoul, KR
59.0.69.117	AS4766 Korea Telecom	`5.50ms` from Seoul, KR
122.230.38.165	AS4134 CHINANET-BACKBONE	`9.06ms` from Shanghai, CN
84.54.150.37	AS35773 iConnect Ltd.	`0.22ms` from Sofia, BG
84.33.213.165	AS34081 INCUBATEC GmbH - Srl	`5.65ms` from Zuerich, CH
42.187.137.149	AS45090 Shenzhen Tencent Computer Systems Company Limited	`4.65ms` from Beijing, CN
113.204.229.149	AS4837 CHINA UNICOM China169 Backbone	`1.03ms` from Chongqing, CN
62.72.68.133	AS8881 1&1 Versatel GmbH	`1.69ms` from Duesseldorf, DE
42.119.240.229	AS18403 FPT Telecom Company	`1.08ms` from Ho Chi Minh City, VN
182.42.225.101	AS4134 CHINANET-BACKBONE	`0.99ms` from Hohhot, CN
45.200.45.85	AS54801 Zillion Network Inc.	`1.64ms` from Hong Kong, HK
14.204.129.133	AS4837 CHINA UNICOM China169 Backbone	`11.86ms` from Kunming, CN
98.203.88.21	AS7922 Comcast Cable Communications, LLC	`9.09ms` from Miami, US
193.176.181.165	AS202090 Aktivnie Tehnologii LLC	`1.20ms` from Minsk, BY

Traceroute

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

traceroute -a -n -q1 -f2 -m13 123.151.2.198

traceroute to 123.151.2.198 (123.151.2.198): 13 hops max, 52 byte packets

2 [AS56911] 185.169.236.232 0.534 ms

3 [AS3356] 212.133.7.109 22.222 ms

4 *

5 [AS3356] 212.133.94.190 16.178 ms

6 *

7 [AS4134] 202.97.12.53 240.685 ms

8 *

9 [AS4134] 202.97.19.74 230.393 ms

10 [AS17638] 219.150.91.18 231.19 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Milan, IT

On January 30th 2026

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