123.255.96.0/19
AS4641 · The Hong Kong Internet Exchange Limited
Need more data or want to access it via API or data downloads? Sign up to get free access
Sign up for free ›Summary
| Country |
Hong Kong
|
| Domain | cuhk.edu.hk |
| ASN | AS4641 |
| Registry | APNIC |
| ID | CUHKNET |
WHOIS Details
inetnum: 123.255.96.0 - 123.255.127.255 netname: CUHKNET descr: Information Technology Services Centre descr: The Chinese University of Hong Kong country: HK org: ORG-CUOH1-AP admin-c: NA17-AP tech-c: NT27-AP abuse-c: AC2019-AP status: ALLOCATED PORTABLE remarks: -------------------------------------------------------- remarks: To report network abuse, please contact mnt-irt remarks: For troubleshooting, please contact tech-c and admin-c remarks: Report invalid contact via www.apnic.net/invalidcontact remarks: -------------------------------------------------------- mnt-by: APNIC-HM mnt-lower: MAINT-CUHKNET-HK mnt-routes: MAINT-CUHKNET-HK mnt-irt: IRT-CUHKNET-HK last-modified: 2022-12-05T02:41:47Z source: APNIC irt: IRT-CUHKNET-HK address: Information Technology Services Centre, address: The Chinese University of Hong Kong, address: Shatin, N.T. address: Hong Kong e-mail: noc-admin@cuhk.edu.hk abuse-mailbox: noc-admin@cuhk.edu.hk admin-c: NA17-AP tech-c: NT27-AP auth: # Filtered remarks: noc-admin@cuhk.edu.hk was validated on 2025-11-12 mnt-by: MAINT-CUHKNET-HK last-modified: 2025-11-18T00:26:31Z source: APNIC organisation: ORG-CUOH1-AP org-name: The Chinese University of Hong Kong org-type: LIR country: HK address: Information Technology Service Centre address: G/F., Pi-Chiu Building phone: +852-3943-8848 fax-no: +852-2603-5001 e-mail: noc-admin@cuhk.edu.hk mnt-ref: APNIC-HM mnt-by: APNIC-HM last-modified: 2023-09-05T02:14:42Z source: APNIC role: ABUSE CUHKNETHK country: ZZ address: Information Technology Services Centre, address: The Chinese University of Hong Kong, address: Shatin, N.T. address: Hong Kong phone: +000000000 e-mail: noc-admin@cuhk.edu.hk admin-c: NA17-AP tech-c: NT27-AP nic-hdl: AC2019-AP remarks: Generated from irt object IRT-CUHKNET-HK remarks: noc-admin@cuhk.edu.hk was validated on 2025-11-12 abuse-mailbox: noc-admin@cuhk.edu.hk mnt-by: APNIC-ABUSE last-modified: 2025-11-12T01:03:41Z source: APNIC person: Network Administration Contact address: Information Technology Services Centre, address: The Chinese University of Hong Kong, address: Shatin, N.T. address: Hong Kong country: HK phone: +852-3943-8830 fax-no: +852-2603-5001 e-mail: noc-admin@cuhk.edu.hk nic-hdl: NA17-AP notify: noc-admin@cuhk.edu.hk mnt-by: MAINT-CUHKNET-HK last-modified: 2012-09-19T01:45:32Z source: APNIC person: Network Technical Contact address: Information Technology Services Centre, address: The Chinese University of Hong Kong, address: Shatin, N.T. address: Hong Kong country: HK phone: +852-3943-8830 fax-no: +852-2603-5001 e-mail: noc-tech@cuhk.edu.hk nic-hdl: NT27-AP notify: noc-tech@cuhk.edu.hk mnt-by: MAINT-CUHKNET-HK last-modified: 2012-09-19T01:46:08Z source: APNIC route: 123.255.96.0/19 descr: The Chinese University of Hong Kong origin: AS4641 mnt-lower: MAINT-CUHKNET-HK mnt-routes: MAINT-CUHKNET-HK mnt-by: MAINT-CUHKNET-HK last-modified: 2011-05-20T07:00:59Z source: APNIC
Nearby Ranges
BGP prefixes that overlap with 123.255.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 123.255.0.0/18 | AS23655 | 2degrees | 16,384 |
| 123.255.128.0/18 | AS9374 | EDION Corporation | 16,384 |
| 123.255.200.0/21 | AS24521 | PT Data Utama Dinamika | 2,048 |
| 123.255.240.0/21 | AS10001 | Mics Network Corporation | 2,048 |
| 123.255.192.0/21 | AS17698 | COMMUNITY NETWORK CENTER INC. | 2,048 |
| 123.255.232.0/21 | AS24259 | kanuma cable television Corporation | 2,048 |
| 123.255.202.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.203.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.204.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.205.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.206.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.207.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.13.0/24 | AS38084 | Static Allocation to Netspeed | 256 |
| 123.255.230.0/24 | AS45560 | SPLUNKNET-PH | 256 |
| 123.255.231.0/24 | AS45560 | SPLUNKNET-PH | 256 |
| 123.255.201.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
| 123.255.200.0/24 | AS24521 | DATAUTAMA-NET-ID | 256 |
Hosted domains
There are no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
6 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 123.255.111.252 |
1.59ms from Hong Kong,
HK
|
|
| 123.255.103.252 |
1.50ms from Hong Kong,
HK
|
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 |
|---|---|---|
| 168.100.148.67 |
0.23ms from Ashburn,
US
|
|
| 199.5.196.3 |
5.38ms from Ashburn,
US
|
|
| 98.252.201.147 |
4.43ms from Atlanta,
US
|
|
| 52.35.214.67 |
0.14ms from Boardman,
US
|
|
| 86.146.136.195 |
2.96ms from Erith,
GB
|
|
| 14.186.90.83 |
1.66ms from Ho Chi Minh City,
VN
|
|
| 27.64.135.147 |
3.38ms from Ho Chi Minh City,
VN
|
|
| 1.181.57.19 |
11.26ms from Hohhot,
CN
|
|
| 124.50.126.3 |
1.91ms from Incheon,
KR
|
|
| 114.207.98.179 |
1.77ms from Incheon,
KR
|
|
| 23.126.157.147 |
4.67ms from Los Angeles,
US
|
|
| 201.225.225.227 |
0.57ms from Panama,
PA
|
|
| 83.206.173.211 |
16.31ms from Paris,
FR
|
|
| 139.218.54.147 |
4.32ms from Sydney,
AU
|
|
| 133.27.18.35 |
3.28ms from Tokyo,
JP
|
|
| 20.200.126.67 |
0.37ms from Toronto,
CA
|
|
| 20.242.77.99 |
0.27ms from Boydton,
US
|
|
| 193.58.156.131 |
2.33ms from Brussels,
BE
|
|
| 186.153.135.99 |
1.30ms from Buenos Aires,
AR
|
|
| 216.250.239.3 |
0.49ms from Chicago,
US
|
|
| 129.79.100.35 |
5.29ms from Chicago,
US
|
|
| 187.49.129.163 |
11.81ms from Curitiba,
BR
|
|
| 109.250.208.51 |
3.90ms from Duesseldorf,
DE
|
|
| 76.139.218.115 |
8.80ms from Flint,
US
|
|
| 119.189.151.179 |
7.81ms from Jinan,
CN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
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.
Our IP tools
Explore all toolsSummarize IPs
Use our data visualization tool to create a visual overview of multiple IPs.
Try Summarize IPs