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:  2025-09-04T05:18:40Z
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
202.21.187.0/24	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
202.21.158.250	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
202.21.159.206	AS23728 Republic Polytechnic. Multihoming AS Singapore	`1.12ms` from Singapore, SG
202.21.158.206	AS23728 Republic Polytechnic. Multihoming AS Singapore	`1.12ms` 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
77.174.255.183	AS1136 KPN B.V.	`1.03ms` from Amsterdam, NL
187.65.137.55	AS28573 Claro NXT Telecomunicacoes Ltda	`14.70ms` from Fortaleza, BR
61.164.102.167	AS4134 CHINANET-BACKBONE	`9.69ms` from Hangzhou, CN
164.113.60.7	AS2495 Kansas Research and Education Network	`5.42ms` from Kansas City, US
46.227.139.167	AS24945 Telecommunication Company Vinteleport Ltd.	`2.94ms` from Kyiv, UA
119.230.204.151	AS17511 OPTAGE Inc.	`2.19ms` from Osaka, JP
157.120.66.231	AS9621 Okinawa Telecommunication Network Co.,Inc	`19.94ms` from Osaka, JP
100.34.95.215	AS701 Verizon Business	`1.74ms` from Philadelphia, US
23.213.192.71	AS16625 Akamai Technologies, Inc.	`0.08ms` from Santiago, CL
177.64.11.7	AS28573 Claro NXT Telecomunicacoes Ltda	`2.39ms` from Sao Paulo, BR
123.198.41.167	AS2527 Sony Network Communications Inc.	`2.37ms` from Tokyo, JP
192.243.53.71	AS39572 DataWeb Global Group B.V.	`0.19ms` from Ashburn, US
35.245.138.151	AS396982 Google LLC	`0.13ms` from Ashburn, US
108.192.125.119	AS7018 AT&T Enterprises, LLC	`17.94ms` from Chicago, US
108.130.138.23	AS16509 Amazon.com, Inc.	`0.42ms` from Dublin, IE
183.129.155.7	AS4134 CHINANET-BACKBONE	`4.94ms` from Hangzhou, CN
103.75.101.55	AS131111 PT Mora Telematika Indonesia	`1.06ms` from Jakarta, ID
18.134.88.119	AS16509 Amazon.com, Inc.	`0.17ms` from London, GB
35.136.191.7	AS33363 Charter Communications, Inc	`9.65ms` from Orlando, US
126.26.239.23	AS17676 SoftBank Corp.	`2.22ms` from Osaka, JP
71.88.136.39	AS20115 Charter Communications LLC	`14.56ms` from Richardson, US
209.240.146.199	AS10732 TierraNet Inc.	`0.66ms` from San Diego, US
211.179.198.151	AS9318 SK Broadband Co Ltd	`7.22ms` from Seoul, KR
1.158.9.151	AS1221 Telstra Limited	`3.17ms` from Sydney, AU
212.88.28.231	AS8447 A1 Telekom Austria AG	`10.78ms` from Vienna, AT

Traceroute

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

traceroute -a -n -q1 -f5 202.21.158.206

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

5 [AS174] 38.104.174.201 2.065 ms

6 *

7 [AS174] 154.54.5.154 18.255 ms

8 [AS174] 154.54.43.14 19.579 ms

9 [AS174] 154.54.12.126 19.255 ms

10 [AS6453] 66.198.101.128 192.095 ms

11 [AS6453] 64.86.26.36 189.85 ms

12 *

13 *

14 *

15 [AS23728] 202.21.158.206 190.083 ms

Measurement taken from

IPinfo ProbeNet in Orem, US

On October 17th 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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