137.132.21.0/24

AS7472 · NUS Information Technology

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Summary

Country	Singapore
Domain	nus.edu.sg
ASN	AS7472
Parent Range	137.132.0.0/16
Registry	APNIC
ID	NUSNET

WHOIS Details

inetnum:        137.132.0.0 - 137.132.255.255
netname:        NUSNET
descr:          imported inetnum object for NUS-1
country:        SG
org:            ORG-NUOS1-AP
admin-c:        CCNU1-AP
tech-c:         CCNU1-AP
abuse-c:        AN1032-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:        --------------------------------------------------------
remarks:        Fault, Abuse & Spam Reporting:
remarks:        Spam and Abuse: abuse@nus.edu.sg
remarks:        Network Issues: noc@nus.edu.sg
remarks:        NOC Telephone: +65-6516-1786
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
notify:         ccenet@nus.edu.sg
mnt-by:         APNIC-HM
mnt-lower:      MAINT-NUS-AP
mnt-routes:     MAINT-NUS-AP
mnt-irt:        IRT-NUS-SG
last-modified:  2020-10-20T01:04:56Z
source:         APNIC

irt:            IRT-NUS-SG
address:        NUS Information Technology
address:        2 Engineering Drive 4
address:        National University of Singapore
address:        Singapore 117584
e-mail:         abuse@nus.edu.sg
abuse-mailbox:  abuse@nus.edu.sg
admin-c:        CN89-AP
tech-c:         CN89-AP
auth:           # Filtered
remarks:        abuse@nus.edu.sg was validated on 2025-05-02
mnt-by:         MAINT-NUS-AP
last-modified:  2025-09-04T01:00:12Z
source:         APNIC

organisation:   ORG-NUOS1-AP
org-name:       National University of Singapore
org-type:       LIR
country:        SG
address:        2 Engineering Drive 4
phone:          +65-6516-7440
fax-no:         +65-6778-0198
e-mail:         infranoc@nus.edu.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:43Z
source:         APNIC

role:           ABUSE NUSSG
country:        ZZ
address:        NUS Information Technology
address:        2 Engineering Drive 4
address:        National University of Singapore
address:        Singapore 117584
phone:          +000000000
e-mail:         abuse@nus.edu.sg
admin-c:        CN89-AP
tech-c:         CN89-AP
nic-hdl:        AN1032-AP
remarks:        Generated from irt object IRT-NUS-SG
remarks:        abuse@nus.edu.sg was validated on 2025-05-02
abuse-mailbox:  abuse@nus.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-02T02:17:39Z
source:         APNIC

person:         Computer Centre National Universityof Singapore
address:        2 Engineering Drive 4, National University of Singapore117584
country:        SG
phone:          +65 8742484
e-mail:         ccenet@nus.edu.sg
nic-hdl:        CCNU1-AP
remarks:        ----------
remarks:        imported from ARIN object:
remarks:        
remarks:        poc-handle:  DA18-ORG-ARIN
remarks:        is-role:     Y
remarks:        last-name:   Computer Centre, National Universityof Singapore
remarks:        street:      2 Engineering Drive 4, National University of Singapore117584
remarks:        country:     SG
remarks:        mailbox:     ccenet@nus.edu.sg
remarks:        bus-phone:   +65 8742484
remarks:        reg-date:    1999-03-09
remarks:        changed:     hostmaster@arin.poc 20020215
remarks:        source:      ARIN
remarks:        
remarks:        ----------
notify:         ccenet@nus.edu.sg
mnt-by:         MNT-NUS-SG
last-modified:  2008-09-04T07:29:35Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 137.132.21.0/24

Range	ASN	Company	Num of IPs
137.132.0.0/16	AS7472	imported inetnum object for NUS-1	65,536

Nearby Ranges

BGP prefixes that overlap with 137.132.0.0/16

Range	ASN	Company	Num of IPs
137.132.0.0/16	AS7472	imported inetnum object for NUS-1	65,536

Hosted domains

There are 3 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
137.132.21.13	joinus.edu.sg	2
137.132.21.55	sox.net.sg	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

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

IP Address	ASN	Details
137.132.21.42	AS7472 NUS Information Technology	`0.89ms` 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
1.91.170.232	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`6.64ms` from Beijing, CN
31.14.13.216	AS44043 Cyber_Folks SRL	`5.62ms` from Bucharest, RO
3.73.230.88	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
123.27.69.40	AS45899 VNPT Corp	`2.28ms` from Hanoi, VN
81.94.194.200	AS20860 IOMART CLOUD SERVICES LIMITED	`3.15ms` from London, GB
81.78.32.248	AS5378 Vodafone Limited	`7.90ms` from Manchester, GB
126.59.151.248	AS17676 SoftBank Corp.	`2.73ms` from Osaka, JP
52.7.81.24	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
38.173.206.72	AS54600 PEG TECH INC	`0.25ms` from San Jose, US
1.249.35.104	AS9318 SK Broadband Co Ltd	`6.11ms` from Seoul, KR
106.197.75.56	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`0.18ms` from Chennai, IN
54.229.106.200	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
177.89.18.200	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`3.07ms` from Joao Pessoa, BR
122.136.201.40	AS4837 CHINA UNICOM China169 Backbone	`19.79ms` from Liaoyang, CN
172.118.40.104	AS20001 Charter Communications Inc	`6.37ms` from Los Angeles, US
93.51.5.40	AS12874 Fastweb SpA	`3.37ms` from Milan, IT
52.86.13.88	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
200.251.125.8	AS4230 CLARO S.A.	`8.98ms` from Rio de Janeiro, BR
54.179.133.88	AS16509 Amazon.com, Inc.	`0.16ms` from Singapore, SG
114.39.102.104	AS3462 Data Communication Business Group	`3.90ms` from Taichung, TW
178.134.111.56	AS35805 JSC "Silknet"	`0.94ms` from Tbilisi, GE
119.84.199.72	AS4134 CHINANET-BACKBONE	`2.83ms` from Chongqing, CN
159.238.38.104	AS14977 State of Wyoming Department A&I	`6.56ms` from Denver, US
88.20.113.88	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.78ms` from Madrid, ES
153.36.161.184	AS4837 CHINA UNICOM China169 Backbone	`7.65ms` from Nanjing, CN

Traceroute

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

traceroute -a -n -q1 -f4 137.132.21.11

traceroute to 137.132.21.11 (137.132.21.11): 64 hops max, 52 byte packets

4 [AS8764] 82.135.135.97 4.06 ms

5 [AS7472] 137.132.21.11 258.223 ms

Measurement taken from

IPinfo ProbeNet in Siauliai, LT

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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