1. All IP Ranges
  2. 202.0.0.0/8
  3. 202.21.0.0/16
  4. AS23728  | 202.21.158.0/23

202.21.158.0/23

AS23728  ·  Republic Polytechnic. Multihoming AS Singapore

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Summary

Country Singapore
Domain rp.edu.sg
ASN AS23728
Registry APNIC
ID RPNET

WHOIS Details

inetnum:        202.21.158.0 - 202.21.159.255
netname:        RPNET
descr:          Republic Polytechnic
descr:          9 Woodlands Avenue 9, Singapore 738964
country:        SG
org:            ORG-RPS1-AP
admin-c:        RN225-AP
tech-c:         RN225-AP
abuse-c:        AR1008-AP
status:         ASSIGNED PORTABLE
remarks:        Send abuse reports to abuse@rp.sg
mnt-by:         APNIC-HM
mnt-routes:     MAINT-SG-REPUBLIC-POLYTECHNIC
mnt-irt:        IRT-REPUBLICPOLYTECHNIC-SG
last-modified:  2020-08-05T13:05:03Z
source:         APNIC

irt:            IRT-REPUBLICPOLYTECHNIC-SG
address:        9 Woodlands Avenue 9, Singapore 738964
e-mail:         Help-IT@rp.edu.sg
abuse-mailbox:  Help-IT@rp.edu.sg
admin-c:        RN225-AP
tech-c:         RN225-AP
auth:           # Filtered
remarks:        help-it@rp.edu.sg was validated on 2025-08-26
mnt-by:         MAINT-SG-REPUBLIC-POLYTECHNIC
last-modified:  2025-11-18T00:27:27Z
source:         APNIC

organisation:   ORG-RPS1-AP
org-name:       Republic Polytechnic, Singapore
org-type:       LIR
country:        SG
address:        9 Woodlands Avenue 9
address:        Singapore 738964
phone:          +65-6697-1643
fax-no:         +65-6415-1310
e-mail:         Help-IT@rp.edu.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:54Z
source:         APNIC

role:           ABUSE REPUBLICPOLYTECHNICSG
country:        ZZ
address:        9 Woodlands Avenue 9, Singapore 738964
phone:          +000000000
e-mail:         Help-IT@rp.edu.sg
admin-c:        RN225-AP
tech-c:         RN225-AP
nic-hdl:        AR1008-AP
remarks:        Generated from irt object IRT-REPUBLICPOLYTECHNIC-SG
remarks:        help-it@rp.edu.sg was validated on 2025-08-26
abuse-mailbox:  Help-IT@rp.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-26T13:11:21Z
source:         APNIC

person:         RP NOC
address:        9 Woodlands Avenue 9, Singapore 738964
country:        SG
phone:          +65-6510-3000
fax-no:         +65-6415-1310
e-mail:         NOC@rp.edu.sg
nic-hdl:        RN225-AP
remarks:        Republic Polytechnic - Network Operations
abuse-mailbox:  ABUSE@rp.edu.sg
mnt-by:         MAINT-SG-RPNET
last-modified:  2012-02-29T02:11:04Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 202.21.0.0/16

Range ASN Company Num of IPs
202.21.96.0/19 AS9484 Mobinet LLC 8,192
202.21.160.0/20 AS17676 Juntendo University School of Medicine 4,096
202.21.8.0/21 AS2764 AAPT Limited 2,048
202.21.0.0/21 AS4668 LG CNS 2,048
202.21.8.0/21 AS7545 AAPT Limited 2,048
202.21.44.0/22 AS24186 RailTel Corporation is an Internet Service Provider. 1,024
202.21.40.0/22 AS24186 RailTel Corporation is an Internet Service Provider. 1,024
202.21.136.0/23 AS18119 Advanced Computer Solutions, Internet Service Provider, 512
202.21.184.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.185.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.186.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.187.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.149.0/24 AS38589 National Institute of Development Administration 256
202.21.130.0/24 AS4049 MetService New Zealand Ltd 256
202.21.140.0/24 AS55545 Suranaree University of Technology 256
202.21.129.0/24 AS56175 Merit Medical Singapore Pte Ltd 256
202.21.157.0/24 AS9303 The Digital Lab 2007 Limited 256
202.21.102.0/24 AS9484 MobiNet-Customer-141 256
202.21.103.0/24 AS9484 MobiNet-Customer-142 256
202.21.104.0/24 AS9484 MobiNet-VSAT 256
202.21.105.0/24 AS9484 MobiNet-Customer-131 256
202.21.106.0/24 AS9484 MobiNet-Customer-128 256
202.21.107.0/24 AS9484 MobiNet-Customer-143 256
202.21.108.0/24 AS9484 MobiNet-Customer-129 256
202.21.109.0/24 AS9484 MobiNet-Customer-130 256
202.21.110.0/24 AS9484 MobiNet-Customer-144 256
202.21.117.0/24 AS9484 MobiNet-Customer-134 256
202.21.119.0/24 AS9484 MobiNet-Customer-136 256
202.21.120.0/24 AS9484 MobiNet-Test 256
202.21.121.0/24 AS9484 MobiNet-Host 256
202.21.122.0/24 AS9484 MobiNet-Customer-125 256
202.21.124.0/24 AS9484 MobiNet-Customer-133 256
202.21.125.0/24 AS9484 MobiNet-Customer-143 256
202.21.126.0/24 AS9484 MobiNet-Customer-145 256
202.21.127.0/24 AS9484 MobiNet-Customer-140 256
202.21.96.0/24 AS9484 MobiNet-Customer-125 256
202.21.34.0/24 AS132717 NxtGen-HDDC 256
202.21.99.0/24 AS9484 MobiNet-Customer-141 256
202.21.37.0/24 AS132717 NxtGen-MUM 256
202.21.176.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.177.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.178.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.179.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.180.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.182.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256
202.21.183.0/24 AS24016 Focusinfocom | Raajje Online (ROL) 256

Hosted domains

There are 2 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
202.21.158.189 rp.gov.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

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

IP Address ASN Details
202.21.158.206 AS23728 Republic Polytechnic. Multihoming AS Singapore 1.03ms from Singapore, SG
202.21.159.206 AS23728 Republic Polytechnic. Multihoming AS Singapore 1.15ms 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
101.31.15.87 AS4837 CHINA UNICOM China169 Backbone 14.14ms from Beijing, CN
34.213.194.183 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
184.146.32.167 AS577 Bell Canada 3.44ms from Montreal, CA
180.54.64.151 AS4713 NTT DOCOMO BUSINESS,Inc. 3.32ms from Osaka, JP
69.83.144.103 AS22394 Verizon Business 1.46ms from Portland, US
179.107.118.135 AS53132 Mega Grupo de Telecomunicações Ltda 17.01ms from Rio de Janeiro, BR
117.52.47.183 AS3786 LG DACOM Corporation 0.96ms from Seoul, KR
126.42.205.151 AS17676 SoftBank Corp. 11.44ms from Tokyo, JP
213.159.145.7 AS41549 Elektrizitaets- und Wasserwerk der Stadt Buchs SG 2.27ms from Zuerich, CH
94.70.150.135 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.49ms from Athens, GR
73.237.138.231 AS7922 Comcast Cable Communications, LLC 4.45ms from Atlanta, US
140.192.200.7 AS20130 Depaul University 0.86ms from Chicago, US
47.227.111.119 AS33363 Charter Communications, Inc 7.64ms from Chicago, US
73.45.228.103 AS7922 Comcast Cable Communications, LLC 3.38ms from Chicago, US
91.20.105.103 AS3320 Deutsche Telekom AG 9.02ms from Frankfurt am Main, DE
47.181.51.135 AS5650 Frontier Communications of America, Inc. 2.09ms from Los Angeles, US
73.55.12.39 AS7922 Comcast Cable Communications, LLC 6.96ms from Miami, US
222.92.90.55 AS4134 CHINANET-BACKBONE 4.04ms from Nanjing, CN
60.152.155.247 AS17676 SoftBank Corp. 3.51ms from Osaka, JP
71.238.17.103 AS7922 Comcast Cable Communications, LLC 5.79ms from Portland, US
76.146.30.7 AS7922 Comcast Cable Communications, LLC 14.35ms from Seattle, US
112.151.118.23 AS17858 LG POWERCOMM 1.85ms from Seoul, KR
122.99.140.103 AS17878 DREAMMARK1 1.06ms from Seoul, KR
43.106.28.87 AS45102 Alibaba (US) Technology Co., Ltd. 0.83ms from Singapore, SG
219.242.56.7 AS4538 China Education and Research Network Center 2.00ms from Beijing, 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 202.21.158.206
traceroute to 202.21.158.206 (202.21.158.206): 64 hops max, 52 byte packets
5 [AS20940] 23.56.139.18 0.345 ms
6 *
7 [AS1299] 62.115.176.173 38.041 ms
8 [AS3758] 165.21.139.133 35.479 ms
9 [AS3758] 165.21.139.150 36.716 ms
10 [AS23728] 202.21.158.206 38.047 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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