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	getnibbly.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

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

IP Address	ASN	Details
165.0.4.1	AS37053 RSAWEB (PTY) LTD	`1.58ms` from Cape Town, ZA
165.0.5.43	AS37053 RSAWEB (PTY) LTD	`1.81ms` 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
44.223.154.231	AS14618 Amazon.com, Inc.	`0.55ms` from Ashburn, US
98.93.233.23	AS14618 Amazon.com, Inc.	`0.47ms` from Ashburn, US
183.252.180.7	AS9808 China Mobile Communications Group Co., Ltd.	`3.38ms` from Fuzhou, CN
80.182.104.231	AS3269 Telecom Italia S.p.A.	`5.83ms` from Milan, IT
5.164.186.87	AS34533 JSC "ER-Telecom Holding"	`0.49ms` from Samara, RU
54.206.123.119	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
89.235.111.87	AS58224 Iran Telecommunication Company PJS	`11.17ms` from Yerevan, AM
73.237.245.167	AS7922 Comcast Cable Communications, LLC	`4.41ms` from Atlanta, US
196.77.43.71	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.23ms` from Casablanca, MA
27.14.231.215	AS4837 CHINA UNICOM China169 Backbone	`2.76ms` from Chongqing, CN
64.216.250.87	AS7018 AT&T Enterprises, LLC	`1.03ms` from Dallas, US
171.242.70.119	AS7552 Viettel Group	`5.31ms` from Hanoi, VN
118.136.145.183	AS23700 Linknet-Fastnet ASN	`4.18ms` from Jakarta, ID
124.104.199.215	AS9299 Philippine Long Distance Telephone Company	`2.87ms` from Manila, PH
73.255.129.215	AS7922 Comcast Cable Communications, LLC	`6.80ms` from Miami, US
173.26.153.215	AS30036 Mediacom Communications Corp	`14.59ms` from Minneapolis, US
80.70.222.55	AS16080 Payplug Enterprise SAS	`0.51ms` from Paris, FR
4.178.68.7	AS8075 Microsoft Corporation	`0.37ms` from Paris, FR
184.103.170.215	AS209 CenturyLink Communications, LLC	`2.67ms` from Phoenix, US
114.111.213.39	AS17857 SK Broadband Co Ltd	`7.67ms` from Seoul, KR
43.142.176.231	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.72ms` from Shanghai, CN
90.154.155.23	AS34295 Geo BG Net SPLtd.	`14.10ms` from Sofia, BG
52.243.43.199	AS8075 Microsoft Corporation	`0.18ms` from Tokyo, JP
74.15.252.151	AS577 Bell Canada	`1.58ms` from Toronto, CA
185.140.84.183	AS31382 CANCOM Austria AG	`0.55ms` 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 165.0.4.1

traceroute to 165.0.4.1 (165.0.4.1): 64 hops max, 52 byte packets

1 [AS16509] 52.93.134.67 0.875 ms

2 [AS16509] 52.93.57.91 1.148 ms

3 [] 196.60.70.26 1.225 ms

4 [AS37053] 165.0.4.1 1.762 ms

Measurement taken from

IPinfo ProbeNet in Cape Town, ZA

On December 29th 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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