165.0.4.0/23

AS37053 · RSAWEB (PTY) LTD

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Summary

Country	South Africa
Domain	rsaweb.co.za
ASN	AS37053
Parent Range	165.0.0.0/16
Registry	AFRINIC
ID	RSAWEB

WHOIS Details

inetnum:        165.0.4.0 - 165.0.5.255
netname:        RSAWEB
descr:          RSAWEB
country:        ZA
admin-c:        RH4-AFRINIC
tech-c:         RH4-AFRINIC
status:         ASSIGNED PA
remarks:        RSAWEB
mnt-by:         RSA-MNT
changed:        [email protected] 20180905
source:         AFRINIC

person:         RSAWeb Hostmaster
address:        Suite 3 Private Bag X1005
address:        Claremont
address:        7735
address:        Cape Town
address:        South Africa
phone:          tel:+27-21-462-6798
fax-no:         tel:+27-21-462-6794
e-mail:         [email protected]
e-mail:         [email protected]
nic-hdl:        RH4-AFRINIC
mnt-by:         GENERATED-JIYYOXVTWYDB3MMOMYWCWOYZV9VXUT0G-MNT
changed:        [email protected] 20060522
changed:        [email protected] 20100310
changed:        [email protected] 20101108
changed:        [email protected] 20150602
changed:        [email protected] 20200110
source:         AFRINIC

route:          165.0.4.0/23
descr:          RSAWEB
origin:         AS37053
mnt-by:         RSA-MNT
changed:        [email protected] 20190528
source:         AFRINIC

Overlapping Ranges

BGP prefixes that contain 165.0.4.0/23

Range	ASN	Company	Num of IPs
165.0.0.0/16	AS37053	RSAWEB (PTY) LTD	65,536

Nearby Ranges

BGP prefixes that overlap with 165.0.0.0/16

Range	ASN	Company	Num of IPs
165.0.0.0/16	AS37053	RSAWEB (PTY) LTD	65,536
165.0.224.0/19	AS37053	RSAWEB	8,192
165.0.92.0/22	AS37053	RSAWEB	1,024
165.0.132.0/22	AS37053	RSAWEB	1,024
165.0.88.0/22	AS37053	RSAWEB	1,024
165.0.0.0/23	AS37053	RSAWEB	512
165.0.2.0/23	AS37053	RSAWEB	512
165.0.10.0/23	AS37053	RSAWEB	512
165.0.6.0/23	AS37053	RSAWEB	512
165.0.74.0/23	AS37053	RSAWEB	512
165.0.8.0/23	AS37053	RSAWEB	512
165.0.12.0/23	AS37053	RSAWEB	512
165.0.14.0/23	AS37053	RSAWEB	512
165.0.62.0/24	AS37053	RSAWEB	256
165.0.32.0/24	AS37053	RSAWEB	256
165.0.33.0/24	AS37053	RSAWEB	256
165.0.81.0/24	AS37053	RSAWEB	256
165.0.56.0/24	AS37053	RSAWEB	256
165.0.59.0/24	AS37053	RSAWEB	256
165.0.87.0/24	AS37053	RSAWEB	256

Hosted domains

There are 8 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
165.0.4.251	funduro.app	8

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

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

IP Address	ASN	Details
165.0.5.51	AS37053 RSAWEB (PTY) LTD	`1.78ms` from Cape Town, ZA
165.0.4.1	AS37053 RSAWEB (PTY) LTD	`1.50ms` from Cape Town, ZA

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
181.138.201.167	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`4.85ms` from Medellin, CO
198.105.84.135	AS23089 Hotwire Communications	`3.25ms` from Miami, US
80.140.114.183	AS3320 Deutsche Telekom AG	`4.06ms` from Nuernberg, DE
60.154.102.71	AS17676 SoftBank Corp.	`4.03ms` from Osaka, JP
1.248.84.39	AS9318 SK Broadband Co Ltd	`3.60ms` from Seoul, KR
89.111.214.183	AS25144 Telekomunikacije Republike Srpske akcionarsko drustvo Banja Luka	`8.05ms` from Belgrade, RS
44.225.228.215	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
73.61.145.103	AS7922 Comcast Cable Communications, LLC	`4.95ms` from Boston, US
34.142.39.247	AS396982 Google LLC	`0.11ms` from London, GB
82.19.214.7	AS5089 Virgin Media Limited	`7.93ms` from London, GB
70.31.214.167	AS577 Bell Canada	`1.41ms` from Montreal, CA
151.161.42.23	AS398573 Commonwealth University of Pennsylvania	`9.83ms` from New York City, US
90.25.249.103	AS3215 Orange S.A.	`1.99ms` from Paris, FR
188.242.216.71	AS35807 SkyNet Ltd.	`0.56ms` from Saint Petersburg, RU
73.109.162.23	AS7922 Comcast Cable Communications, LLC	`7.38ms` from Seattle, US
195.48.34.135	AS1836 green.ch AG	`1.89ms` from Zuerich, CH
120.9.140.103	AS4837 CHINA UNICOM China169 Backbone	`9.42ms` from Beijing, CN
3.170.152.7	AS16509 Amazon.com, Inc.	`0.82ms` from Chicago, US
18.191.173.135	AS16509 Amazon.com, Inc.	`1.02ms` from Columbus, US
130.211.138.183	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
68.58.194.247	AS7922 Comcast Cable Communications, LLC	`8.26ms` from Detroit, US
70.64.126.7	AS6327 Shaw Communications	`14.05ms` from Edmonton, CA
51.89.120.247	AS16276 OVH SAS	`0.11ms` from Frankfurt am Main, DE
193.26.97.231	AS39218 Burda Digital Systems GmbH	`3.90ms` from Frankfurt am Main, DE
120.238.188.71	AS9808 China Mobile Communications Group Co., Ltd.	`4.09ms` from Guangzhou, CN

Traceroute

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

traceroute -a -n -q1 -f5 165.0.4.32

traceroute to 165.0.4.32 (165.0.4.32): 64 hops max, 52 byte packets

5 [AS36994] 196.60.8.232 80.415 ms

6 [AS37662] 154.66.247.66 68.661 ms

7 *

8 [AS37053] 41.71.65.154 70.09 ms

9 [AS37053] 165.0.4.32 68.292 ms

Measurement taken from

IPinfo ProbeNet in Dar es Salaam, TZ

On January 30th 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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