1. All IP Ranges
  2. 123.0.0.0/8
  3. 123.136.0.0/16
  4. AS23767  | 123.136.68.0/24

123.136.68.0/24

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:        123.136.68.0 - 123.136.68.255
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 2025-12-03
mnt-by:         MAINT-A-STAR-SG
last-modified:  2025-12-03T01:42:50Z
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 2025-12-03
abuse-mailbox:  ITSS_Network@hq.a-star.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-03T01:43:10Z
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

Nearby Ranges

BGP prefixes that overlap with 123.136.0.0/16

Range ASN Company Num of IPs
123.136.96.0/19 AS38466 U Mobile Sdn Bhd 8,192
123.136.32.0/19 AS7600 EscapeNet 8,192
123.136.24.0/21 AS38493 Royal Green Communication Limited 2,048
123.136.28.0/24 AS149765 Royal Green Limited 256
123.136.64.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.65.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.66.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.67.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.69.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.70.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.28.0/24 AS138640 Royal Green Limited 256
123.136.100.0/24 AS38466 123.136.100.0/24 256
123.136.24.0/24 AS38493 Royal Green Limited 256
123.136.25.0/24 AS38493 Royal Green Limited 256
123.136.26.0/24 AS38493 Royal Green Limited 256
123.136.27.0/24 AS38493 Royal Green Limited 256
123.136.29.0/24 AS38493 Royal Green Limited 256
123.136.30.0/24 AS38493 Royal Green Limited 256
123.136.31.0/24 AS38493 Royal Green Limited 256
123.136.71.0/24 AS23767 Agency for Science, Technology and Research 256
123.136.28.0/24 AS138640 Royal Green Limited 256
123.136.28.0/24 AS149765 Royal Green Limited 256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
123.136.68.200 technoa.science 1

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

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

IP Address ASN Details
123.136.68.42 AS23767 A-STAR 1.72ms from Singapore, SG

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
130.46.215.120 AS84 Navy Network Information Center (NNIC) 2.65ms from Ashburn, US
89.210.246.136 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.10ms from Athens, GR
202.206.38.120 AS4538 China Education and Research Network Center 12.61ms from Beijing, CN
54.213.35.104 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
84.176.107.24 AS3320 Deutsche Telekom AG 5.02ms from Frankfurt am Main, DE
46.27.25.88 AS12430 VODAFONE ESPANA S.A.U. 1.14ms from Madrid, ES
216.101.117.152 AS7018 AT&T Enterprises, LLC 5.10ms from Miami, US
95.171.61.104 AS20811 Retelit Digital Services S.p.A. 4.31ms from Milan, IT
34.73.111.8 AS396982 Google LLC 0.15ms from Moncks Corner, US
171.110.58.152 AS4134 CHINANET-BACKBONE 4.09ms from Nanning, CN
201.27.148.120 AS27699 TELEFÔNICA BRASIL S.A 1.75ms from Osasco, BR
213.100.184.184 AS1257 Tele2 Sverige AB 12.94ms from Riga, LV
195.136.147.248 AS206948 Krzysztof Jasek trading as KAJA Komputer 7.49ms from Wrocław, PL
73.39.20.104 AS7922 Comcast Cable Communications, LLC 6.87ms from Ashburn, US
174.28.28.136 AS209 CenturyLink Communications, LLC 9.29ms from Denver, US
221.127.39.104 AS9304 HGC Global Communications Limited 1.97ms from Hong Kong, HK
69.121.234.232 AS6128 Cablevision Systems Corp. 5.02ms from New York City, US
2.193.214.232 AS16232 Telecom Italia S.p.A. 19.78ms from Rome, IT
148.164.46.248 AS23154 Sanmina-SCI Corporation 2.54ms from San Jose, US
42.60.166.168 AS9506 Singtel Fibre Broadband 1.44ms from Singapore, SG
209.29.114.24 AS852 TELUS Communications Inc. 0.28ms from Toronto, CA
171.42.83.200 AS4134 CHINANET-BACKBONE 3.89ms from Wuhan, CN
68.201.134.168 AS11427 Charter Communications Inc 5.02ms from Dallas, US
202.186.197.136 AS9930 TTNET-MY 0.72ms from Kuala Lumpur, MY
79.2.26.104 AS3269 Telecom Italia S.p.A. 5.93ms 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 123.136.68.2
traceroute to 123.136.68.2 (123.136.68.2): 64 hops max, 52 byte packets
1 [AS15169] 72.14.232.209 248.333 ms
2 [AS4637] 202.127.73.122 181.012 ms
3 [AS134148] 103.5.242.7 181.891 ms
4 [AS23767] 192.122.136.6 181.485 ms
5 *
6 *
7 *
8 *
9 [AS23767] 123.136.68.2 181.92 ms
Measurement taken from IPinfo ProbeNet in Stockholm, SE
On

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.

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