202.21.158.0/24

AS23728 · Republic Polytechnic. Multihoming AS Singapore

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Summary

Country	Singapore
Domain	rp.edu.sg
ASN	AS23728
Parent Range	202.21.158.0/23
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 is invalid
mnt-by:         MAINT-SG-REPUBLIC-POLYTECHNIC
last-modified:  2026-03-18T13:11:33Z
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 is invalid
abuse-mailbox:  Help-IT@rp.edu.sg
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-18T13:12:43Z
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

Overlapping Ranges

BGP prefixes that contain 202.21.158.0/24

Range	ASN	Company	Num of IPs
202.21.158.0/23	AS23728	Republic Polytechnic	512

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
202.21.0.0/21	AS4668	LG CNS	2,048
202.21.8.0/21	AS2764	AAPT Limited	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
202.21.158.0/23	AS23728	Republic Polytechnic	512
202.21.176.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.179.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.177.0/24	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
202.21.125.0/24	AS9484	MobiNet-Customer-143	256
202.21.127.0/24	AS9484	MobiNet-Customer-140	256
202.21.106.0/24	AS9484	MobiNet-Customer-128	256
202.21.120.0/24	AS9484	MobiNet-Test	256
202.21.110.0/24	AS9484	MobiNet-Customer-144	256
202.21.108.0/24	AS9484	MobiNet-Customer-129	256
202.21.99.0/24	AS9484	MobiNet-Customer-141	256
202.21.121.0/24	AS9484	MobiNet-Host	256
202.21.109.0/24	AS9484	MobiNet-Customer-130	256
202.21.124.0/24	AS9484	MobiNet-Customer-133	256
202.21.117.0/24	AS9484	MobiNet-Customer-134	256
202.21.105.0/24	AS9484	MobiNet-Customer-131	256
202.21.107.0/24	AS9484	MobiNet-Customer-143	256
202.21.102.0/24	AS9484	MobiNet-Customer-141	256
202.21.119.0/24	AS9484	MobiNet-Customer-136	256
202.21.126.0/24	AS9484	MobiNet-Customer-145	256
202.21.122.0/24	AS9484	MobiNet-Customer-125	256
202.21.103.0/24	AS9484	MobiNet-Customer-142	256
202.21.96.0/24	AS9484	MobiNet-Customer-125	256
202.21.34.0/24	AS132717	NxtGen-HDDC	256
202.21.104.0/24	AS9484	MobiNet-VSAT	256
202.21.37.0/24	AS132717	NxtGen-MUM	256
202.21.184.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.182.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.180.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.185.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.178.0/24	AS24016	Focusinfocom \| Raajje Online (ROL)	256
202.21.187.0/24	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
202.21.158.250	rp.edu.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	`0.97ms` 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
5.192.177.56	AS5384 Emirates Internet	`13.30ms` from Al Fujairah City, AE
106.221.23.120	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`8.16ms` from Chennai, IN
183.4.6.152	AS140308 CHINATELECOM Guangdong province Zhuhai 5G network	`11.83ms` from Guangzhou, CN
71.57.220.152	AS7922 Comcast Cable Communications, LLC	`10.33ms` from Herndon, US
59.167.94.40	AS4739 Internode Pty Ltd	`13.83ms` from Melbourne, AU
115.212.81.152	AS4134 CHINANET-BACKBONE	`5.84ms` from Ningbo, CN
201.134.164.136	AS8151 UNINET	`3.87ms` from Santiago de Queretaro, MX
61.24.161.104	AS9824 JCOM Co., Ltd.	`7.18ms` from Tokyo, JP
178.227.168.232	AS31615 Odido Netherlands B.V.	`7.39ms` from Amsterdam, NL
101.26.84.104	AS4837 CHINA UNICOM China169 Backbone	`9.91ms` from Beijing, CN
91.5.234.120	AS3320 Deutsche Telekom AG	`2.38ms` from Berlin, DE
190.175.56.184	AS22927 Telefonica de Argentina	`1.61ms` from Buenos Aires, AR
173.21.38.8	AS30036 Mediacom Communications Corp	`5.57ms` from Chicago, US
73.176.208.8	AS7922 Comcast Cable Communications, LLC	`4.42ms` from Chicago, US
52.51.104.168	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
46.29.124.136	AS35625 Eurofiber France SAS	`0.50ms` from Lille, FR
150.244.4.152	AS766 RedIRIS Autonomous System	`1.91ms` from Madrid, ES
65.131.156.168	AS209 CenturyLink Communications, LLC	`10.56ms` from Minneapolis, US
188.68.161.88	AS197078 Yarnet Ltd	`5.29ms` from Moscow, RU
73.108.194.40	AS7922 Comcast Cable Communications, LLC	`13.26ms` from Murfreesboro, US
2.62.65.56	AS12389 PJSC Rostelecom	`8.72ms` from Novosibirsk, RU
112.252.43.88	AS4837 CHINA UNICOM China169 Backbone	`8.34ms` from Qingdao, CN
212.113.113.72	AS214173 Sever Telecom JSC	`4.15ms` from Saint Petersburg, RU
187.221.5.232	AS8151 UNINET	`4.80ms` from Santiago de Queretaro, MX
148.223.124.120	AS8151 UNINET	`17.38ms` from Santiago de Queretaro, MX

Traceroute

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

traceroute -a -n -q1 -f6 202.21.158.206

traceroute to 202.21.158.206 (202.21.158.206): 64 hops max, 52 byte packets

6 [AS16276] 103.5.15.16 3.76 ms

7 *

8 *

9 [AS4637] 210.57.53.93 0.902 ms

10 [AS3758] 165.21.139.129 0.984 ms

11 [AS3758] 165.21.139.146 1.178 ms

12 [AS23728] 202.21.158.206 1.061 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On March 29th 2026

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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