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:  2025-11-18T00:37:54Z
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

Nearby Ranges

BGP prefixes that overlap with 221.123.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
221.123.112.231	AS23724 IDC, China Telecommunications Corporation	`4.31ms` from Tianjin, 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
65.61.186.4	AS27357 Rackspace Hosting	`0.32ms` from Ashburn, US
173.76.98.164	AS701 Verizon Business	`1.62ms` from Boston, US
70.112.35.244	AS11427 Charter Communications Inc	`6.01ms` from Dallas, US
122.182.142.100	AS24560 Bharti Airtel Ltd., Telemedia Services	`9.00ms` from Delhi, IN
63.177.116.180	AS16509 Amazon.com, Inc.	`0.13ms` from Frankfurt am Main, DE
123.16.32.20	AS45899 VNPT Corp	`0.91ms` from Hanoi, VN
113.252.93.68	AS9304 HGC Global Communications Limited	`1.26ms` from Hong Kong, HK
95.94.33.4	AS2860 NOS COMUNICACOES, S.A.	`6.97ms` from Lisbon, PT
31.119.46.100	AS2856 British Telecommunications PLC	`1.05ms` from London, GB
162.209.149.196	AS40065 CNSERVERS LLC	`0.25ms` from Los Angeles, US
86.221.40.84	AS3215 Orange S.A.	`5.90ms` from Marseille, FR
84.165.96.196	AS3320 Deutsche Telekom AG	`3.89ms` from Nuernberg, DE
148.78.17.228	AS26464 Joyent, Inc.	`0.91ms` from Seoul, KR
112.176.124.84	AS4766 Korea Telecom	`4.11ms` from Seoul, KR
115.40.129.52	AS9845 LG HelloVision Corp.	`13.10ms` from Seoul, KR
20.105.151.100	AS8075 Microsoft Corporation	`0.25ms` from Amsterdam, NL
54.245.110.212	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
196.38.37.180	AS3741 Dimension Data	`1.34ms` from Cape Town, ZA
73.51.59.148	AS7922 Comcast Cable Communications, LLC	`9.94ms` from Chicago, US
20.241.61.244	AS8075 Microsoft Corporation	`0.31ms` from Chicago, US
186.236.178.116	AS22689 SERCOMTEL S/A TELECOMUNICACOES	`5.91ms` from Curitiba, BR
87.239.130.180	AS12586 GHOSTnet GmbH	`0.29ms` from Frankfurt am Main, DE
110.41.14.36	AS55990 Huawei Cloud Service data center	`1.45ms` from Guangzhou, CN
85.58.194.244	AS12479 Orange Espagne SA	`1.84ms` from Madrid, ES
87.18.144.52	AS3269 Telecom Italia S.p.A.	`1.85ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f3 221.123.112.231

traceroute to 221.123.112.231 (221.123.112.231): 64 hops max, 52 byte packets

3 [AS12570] 212.96.178.177 1.103 ms

4 [AS12570] 212.96.178.38 1.554 ms

5 *

6 *

7 *

8 [AS1299] 62.115.192.76 6.028 ms

9 [AS1299] 62.115.124.28 11.966 ms

10 [AS1299] 62.115.114.91 12.295 ms

11 [AS4134] 118.85.205.81 19.295 ms

12 [AS4134] 202.97.103.245 223.855 ms

13 [AS4134] 202.97.12.57 224.516 ms

14 *

15 [AS23724] 36.110.248.122 227.548 ms

16 *

17 [AS23724] 36.110.241.218 229.509 ms

18 *

19 *

20 *

21 *

22 [AS23724] 221.123.112.231 229.321 ms

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On December 14th 2025

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