123.136.67.0/24

AS23767 · A-STAR

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Summary

Country	Singapore
Domain	a-star.edu.sg
ASN	AS23767
Registry	APNIC
ID	A-STAR-SG

WHOIS Details

inetnum:        123.136.67.0 - 123.136.67.255
netname:        A-STAR-SG
descr:          Agency for Science, Technology and Research
country:        SG
admin-c:        IN139-AP
tech-c:         IN139-AP
abuse-c:        AA1894-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-A-STAR-SG
mnt-irt:        IRT-A-STAR-SG
last-modified:  2022-05-12T01:55:18Z
source:         APNIC

irt:            IRT-A-STAR-SG
address:        Agency for Science, Technology and Research
address:        
address:        
address:        
e-mail:         ITSS_Network@hq.a-star.edu.sg
abuse-mailbox:  ITSS_Network@hq.a-star.edu.sg
admin-c:        SM2111-AP
tech-c:         SM2111-AP
auth:           # Filtered
remarks:        itss_network@hq.a-star.edu.sg was validated on 2025-05-27
mnt-by:         MAINT-A-STAR-SG
last-modified:  2025-09-04T05:19:29Z
source:         APNIC

role:           ABUSE ASTARSG
country:        ZZ
address:        Agency for Science, Technology and Research
address:        
address:        
address:        
phone:          +000000000
e-mail:         ITSS_Network@hq.a-star.edu.sg
admin-c:        SM2111-AP
tech-c:         SM2111-AP
nic-hdl:        AA1894-AP
remarks:        Generated from irt object IRT-A-STAR-SG
remarks:        itss_network@hq.a-star.edu.sg was validated on 2025-05-27
abuse-mailbox:  ITSS_Network@hq.a-star.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-27T23:19:56Z
source:         APNIC

person:         ITSS Network
address:        30 Biopolis Street
country:        SG
phone:          +65-64074300
e-mail:         ITSS_Network@hq.a-star.edu.sg
nic-hdl:        IN139-AP
mnt-by:         MAINT-A-STAR-SG
last-modified:  2022-05-12T01:54:16Z
source:         APNIC

route:          123.136.64.0/21
origin:         AS23767
descr:          A*STAR Agency For Science, Technology And Research 1 Fusionopolis Way,
mnt-by:         MAINT-A-STAR-SG
last-modified:  2019-02-14T01:10:43Z
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
193.48.231.88	AS2200 Renater	`17.31ms` from Aubervilliers, FR
98.215.235.72	AS7922 Comcast Cable Communications, LLC	`9.81ms` from Chicago, US
52.30.24.184	AS16509 Amazon.com, Inc.	`0.14ms` from Dublin, IE
91.62.108.104	AS3320 Deutsche Telekom AG	`5.38ms` from Frankfurt am Main, DE
87.187.174.72	AS3320 Deutsche Telekom AG	`6.49ms` from Frankfurt am Main, DE
89.166.142.88	AS9145 EWE TEL GmbH	`6.80ms` from Hamburg, DE
80.186.158.216	AS719 Elisa Oyj	`10.56ms` from Helsinki, FI
195.149.22.24	AS13285 TalkTalk Communications Limited	`3.63ms` from London, GB
80.31.151.88	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.72ms` from Madrid, ES
118.138.242.232	AS56132 Monash University,	`1.86ms` from Melbourne, AU
76.148.116.200	AS7922 Comcast Cable Communications, LLC	`8.79ms` from Miami, US
91.189.213.152	AS202074 Link Telecomunicazioni SRL	`9.20ms` from Palermo, IT
52.6.153.24	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
64.23.150.88	AS14061 DigitalOcean, LLC	`0.28ms` from Santa Clara, US
181.191.55.88	AS267526 ANDREIA LUCIA CADINI DA CUNHA ME	`6.16ms` from Sao Paulo, BR
23.32.56.184	AS20940 Akamai International B.V.	`0.91ms` from Seoul, KR
121.161.90.168	AS4766 Korea Telecom	`1.79ms` from Seoul, KR
180.64.17.104	AS9318 SK Broadband Co Ltd	`3.80ms` from Seoul, KR
27.125.159.104	AS55430 Starhub Ltd	`2.69ms` from Singapore, SG
120.114.80.136	AS1659 Taiwan Academic Network (TANet) Information Center	`7.79ms` from Taichung, TW
122.20.220.248	AS4713 NTT Communications Corporation	`19.18ms` from Tokyo, JP
41.109.71.184	AS36947 Telecom Algeria	`12.40ms` from Algiers, DZ
152.190.74.24	AS701 Verizon Business	`1.99ms` from Ashburn, US
164.41.67.88	AS21506 Fundação Universidade de Brasília	`0.48ms` from Brasilia, BR
73.9.121.72	AS7922 Comcast Cable Communications, LLC	`8.02ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 -m10 123.136.67.132

traceroute to 123.136.67.132 (123.136.67.132): 10 hops max, 52 byte packets

1 [AS15169] 142.251.51.173 236.046 ms

2 [AS4637] 202.147.33.138 163.118 ms

3 [AS23855] 203.30.38.37 164.355 ms

4 *

5 [AS23767] 192.122.136.4 162.978 ms

6 *

7 [AS23767] 192.122.136.4 163.124 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Milan, IT

On September 11th 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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