221.123.112.0/20

AS23724 · IDC, China Telecommunications Corporation

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Summary

Country	China
Domain	chinatelecom.cn
ASN	AS23724
Registry	APNIC
ID	CTXXQD

WHOIS Details

inetnum:        221.123.0.0 - 221.123.127.255
netname:        CTXXQD
descr:          China Telecom Group Corporation Qingdao Branch
descr:          No. 17 Shi Ling Road, Laoshan District, Qingdao City,
descr:          Shandong Province
country:        CN
admin-c:        YW7365-AP
tech-c:         JS4619-AP
mnt-by:         MAINT-CNNIC-AP
mnt-lower:      MAINT-CNNIC-AP
mnt-irt:        IRT-CTXXQD-CN
mnt-routes:     MAINT-CNNIC-AP
status:         ALLOCATED PORTABLE
last-modified:  2024-08-27T05:43:40Z
source:         APNIC

irt:            IRT-CTXXQD-CN
address:        No. 17 Shi Ling Road, Laoshan District, Qingdao City,
address:        Shandong Province
e-mail:         qdzhouy.sd@chinatelecom.cn
abuse-mailbox:  qdzhouy.sd@chinatelecom.cn
admin-c:        YW7365-AP
tech-c:         JS4619-AP
auth:           # Filtered
mnt-by:         MAINT-CNNIC-AP
last-modified:  2024-08-27T05:27:53Z
source:         APNIC

person:         Suqin Ma
address:        No. 17 Shi Ling Road, Laoshan District, Qingdao City,
address:        Shandong Province
country:        CN
phone:          +86-15315013036
e-mail:         masq.sd@chinatelecom.cn
nic-hdl:        JS4619-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2024-08-27T05:27:33Z
source:         APNIC

person:         Yuan Zhou
address:        No. 17 Shi Ling Road, Laoshan District, Qingdao City,
address:        Shandong Province
country:        CN
phone:          +86-15315026789
e-mail:         qdzhouy.sd@chinatelecom.cn
nic-hdl:        YW7365-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2024-08-27T05:27:33Z
source:         APNIC

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
88.133.11.244	AS197524 Leonet Group GmbH	`5.19ms` from Frankfurt am Main, DE
103.219.34.20	AS58461 CT-HangZhou-IDC	`6.48ms` from Hangzhou, CN
132.251.243.100	AS27839 Comteco Ltda	`4.95ms` from La Paz, BO
95.144.201.196	AS2856 British Telecommunications PLC	`4.46ms` from London, GB
86.20.246.84	AS5089 Virgin Media Limited	`10.15ms` from London, GB
104.19.190.68	AS13335 Cloudflare, Inc.	`0.11ms` from Porto Alegre, BR
3.92.247.164	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
46.109.191.100	AS12578 SIA Tet	`0.67ms` from Riga, LV
50.98.121.52	AS852 TELUS Communications Inc.	`3.92ms` from Seattle, US
161.249.211.100	AS10879 Unitedhealthcare	`19.47ms` from Secaucus, US
32.217.8.84	AS46690 Southern New England Telephone Company and SNET America, Inc.	`4.13ms` from Secaucus, US
203.164.240.164	AS4804 Microplex PTY LTD	`1.09ms` from Sydney, AU
34.83.232.132	AS396982 Google LLC	`0.16ms` from The Dalles, US
78.31.155.212	AS29314 VECTRA S.A.	`7.89ms` from Warsaw, PL
65.127.125.244	AS209 CenturyLink Communications, LLC	`2.28ms` from Ashburn, US
45.205.96.180	AS6079 RCN	`1.61ms` from Ashburn, US
191.223.6.36	AS8167 V tal	`19.58ms` from Brasilia, BR
71.211.171.148	AS209 CenturyLink Communications, LLC	`1.99ms` from Denver, US
73.229.233.196	AS7922 Comcast Cable Communications, LLC	`5.21ms` from Denver, US
34.16.157.244	AS396982 Google LLC	`0.14ms` from Las Vegas, US
80.44.52.180	AS9105 TalkTalk Communications Limited	`1.59ms` from London, GB
129.146.215.196	AS31898 Oracle Corporation	`0.15ms` from Phoenix, US
35.81.169.116	AS16509 Amazon.com, Inc.	`4.81ms` from Portland, US
45.186.156.4	AS269499 FIBRALINK INTERNET E TELECOMUNICACOES LTDA	`7.61ms` from Rio de Janeiro, BR
68.123.10.180	AS7018 AT&T Enterprises, LLC	`3.12ms` from San Jose, US

Traceroute

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

traceroute -a -n -q1 -f4 -m13 221.123.120.73

traceroute to 221.123.120.73 (221.123.120.73): 13 hops max, 52 byte packets

4 [AS28917] 80.77.167.52 14.802 ms

5 [] 80.81.195.33 6.766 ms

6 *

7 *

8 *

9 *

10 [AS23724] 106.120.186.98 230.2 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On August 28th 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.

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