123.136.64.0/24

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:        123.136.64.0 - 123.136.64.255
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:  2022-05-12T01:55:16Z
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
123.136.65.0/24 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
123.136.68.0/24 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 are no domains currently hosted on this ASN.

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

Pingable IPs

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

IP Address ASN Details
123.136.64.7 AS23767 A-STAR 1.00ms 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
108.167.168.24 AS19871 Network Solutions, LLC 0.35ms from Atlanta, US
218.241.115.168 AS24151 China Internet Network Infomation Center 1.39ms from Beijing, CN
162.196.50.24 AS7018 AT&T Enterprises, LLC 18.02ms from Chicago, US
40.87.182.8 AS8075 Microsoft Corporation 0.16ms from Des Moines, US
122.40.176.24 AS17858 LG POWERCOMM 1.67ms from Incheon, KR
65.32.237.8 AS33363 Charter Communications, Inc 10.31ms from Orlando, US
60.122.150.120 AS17676 SoftBank Corp. 3.92ms from Osaka, JP
76.14.238.24 AS11404 Wave Broadband 6.89ms from Portland, US
196.206.47.88 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 6.81ms from Rabat, MA
54.89.212.232 AS14618 Amazon.com, Inc. 0.43ms from Reston, US
34.225.23.40 AS14618 Amazon.com, Inc. 0.16ms from Reston, US
46.49.14.88 AS16010 Magticom Ltd. 0.72ms from Tbilisi, GE
42.125.163.72 AS10010 TOKAI Communications Corporation 3.65ms from Tokyo, JP
18.183.210.136 AS16509 Amazon.com, Inc. 1.17ms from Tokyo, JP
138.88.171.120 AS701 Verizon Business 1.92ms from Ashburn, US
69.250.97.136 AS7922 Comcast Cable Communications, LLC 7.17ms from Ashburn, US
174.105.156.72 AS10796 Charter Communications Inc 8.90ms from Columbus, US
113.179.119.56 AS45899 VNPT Corp 4.96ms from Hanoi, VN
222.255.12.168 AS45899 VNPT Corp 4.34ms from Hanoi, VN
196.32.99.40 AS327984 The Ribeiro Group 1.85ms from Johannesburg, ZA
204.1.114.88 AS2914 NTT America, Inc. 0.27ms from Los Angeles, US
71.82.119.120 AS20115 Charter Communications LLC 16.28ms from Milwaukee, US
95.191.249.232 AS12389 PJSC Rostelecom 0.99ms from Novosibirsk, RU
66.177.237.72 AS7922 Comcast Cable Communications, LLC 6.59ms from Orlando, US
176.136.171.184 AS5410 Bouygues Telecom SA 8.67ms from Paris, FR

Traceroute

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

$
traceroute -a -n -q1 123.136.64.7
traceroute to 123.136.64.7 (123.136.64.7): 64 hops max, 52 byte packets
2 *
3 [] 103.16.102.28 7.814 ms
4 [AS23855] 203.30.38.37 7.304 ms
5 [AS23767] 123.136.64.7 8.838 ms
Measurement taken from IPinfo ProbeNet in Singapore, SG
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.

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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