1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.33.0.0/16
  4. AS24510  | 203.33.133.0/24

203.33.133.0/24

AS24510  ·  Optus Customer Network

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Summary

Country Australia
Domain holmesglen.edu.au
ASN AS24510
Registry APNIC
ID HOLMESGLEN-AU

WHOIS Details

inetnum:        203.33.133.0 - 203.33.133.255
netname:        HOLMESGLEN-AU
descr:          HOLMESGLEN INSTITUTE OF TAFE
country:        AU
org:            ORG-HIOT1-AP
admin-c:        HNA8-AP
tech-c:         HNA8-AP
abuse-c:        AH1068-AP
status:         ASSIGNED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-routes:     MAINT-HOLMESGLEN-AU
mnt-irt:        IRT-HOLMESGLEN-AU
last-modified:  2023-02-06T05:59:22Z
source:         APNIC

irt:            IRT-HOLMESGLEN-AU
address:        PoBox 42, chadstone, victoria 3148
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        HNA8-AP
tech-c:         HNA8-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2026-01-04
mnt-by:         MAINT-HOLMESGLEN-AU
last-modified:  2026-01-04T21:54:58Z
source:         APNIC

organisation:   ORG-HIOT1-AP
org-name:       HOLMESGLEN INSTITUTE OF TAFE
org-type:       LIR
country:        AU
address:        Corner Batesford & Warrigal Roads Chadstone, Victoria, 3148
phone:          +61-419-545-662
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:03Z
source:         APNIC

role:           ABUSE HOLMESGLENAU
country:        ZZ
address:        PoBox 42, chadstone, victoria 3148
phone:          +000000000
e-mail:         [email protected]
admin-c:        HNA8-AP
tech-c:         HNA8-AP
nic-hdl:        AH1068-AP
remarks:        Generated from irt object IRT-HOLMESGLEN-AU
remarks:        [email protected] was validated on 2026-01-04
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-04T21:55:34Z
source:         APNIC

role:           HOLMESGLEN  - network administrator
address:        PoBox 42, chadstone, victoria 3148
country:        AU
phone:          +61 3 9564 1925
e-mail:         [email protected]
admin-c:        HNA8-AP
tech-c:         HNA8-AP
nic-hdl:        HNA8-AP
mnt-by:         MAINT-HOLMESGLEN-AU
last-modified:  2012-09-10T04:51:40Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.33.0.0/16

Range ASN Company Num of IPs
203.33.160.0/21 AS7545 iiNet Limited 2,048
203.33.252.0/23 AS4826 Netway Technologies Pty Ltd 512
203.33.158.0/23 AS135089 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.202.0/23 AS134761 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.158.0/23 AS58466 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.108.0/23 AS9266 Fiveways International Limited 512
203.33.206.0/23 AS58519 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.58.0/23 AS9266 Fiveways International Limited 512
203.33.60.0/23 AS9268 Over The Wire Pty Ltd 512
203.33.224.0/23 AS58519 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.214.0/23 AS58519 CHINANET FUJIAN PROVINCE NETWORK 512
203.33.57.0/24 AS151129 SYNCHRONY INTERNATIONAL SERVICES PVT LTD 256
203.33.77.0/24 AS153467 Glen Eira City Council 256
203.33.72.0/24 AS153472 William Branwhite Clarke College 256
203.33.231.0/24 AS17378 Aylie Brutman 256
203.33.150.0/24 AS17766 Nexon Asia Pacific Pty Ltd 256
203.33.171.0/24 AS18111 Bytecard PTY LTD 256
203.33.70.0/24 AS210371 Mobileye Vision Technologies Ltd 256
203.33.10.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.33.8.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.33.9.0/24 AS23764 Chinatelecom Next Carrying Network backbone 256
203.33.65.0/24 AS2764 PG Lion ReSources Aust Pty Ltd 256
203.33.254.0/24 AS38195 SUPERLOOP (AUSTRALIA) PTY LTD 256
203.33.121.0/24 AS38220 Amaze Intelligence Pty Ltd 256
203.33.196.0/24 AS38291 BPS Corporation 256
203.33.236.0/24 AS38611 Bendigo Community Telco Limited 256
203.33.45.0/24 AS399735 LakeLand Internet LLC 256
203.33.145.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.156.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.174.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.32.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.63.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.64.0/24 AS4134 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.128.0/24 AS45158 ISW Technology Pty Ltd 256
203.33.240.0/24 AS45581 Infonet Thailand 256
203.33.102.0/24 AS45852 Bendigo Bank 256
203.33.241.0/24 AS4739 iiNet Limited 256
203.33.255.0/24 AS4739 iiNet Limited 256
203.33.185.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.200.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.21.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.226.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.26.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.4.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.7.0/24 AS4809 CHINANET FUJIAN PROVINCE NETWORK 256
203.33.223.0/24 AS4826 Christopher Kevin Hurley 256
203.33.38.0/24 AS48448 Embark Studios AB 256
203.33.239.0/24 AS58061 MISTIC-AU 256
203.33.67.0/24 AS58777 CHINANET FUJIAN PROVINCE NETWORK 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
203.33.133.251 healthskills.com.au 1
203.33.133.242 mri.edu.au 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

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

IP Address ASN Details
203.33.133.70 AS24510 Optus Customer Network 0.81ms from Melbourne, AU

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
86.97.15.200 AS5384 Emirates Internet 3.34ms from Al Fujairah City, AE
71.80.103.24 AS20115 Charter Communications LLC 19.74ms from Atlanta, US
39.105.230.24 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.06ms from Beijing, CN
47.244.45.152 AS45102 Alibaba (US) Technology Co., Ltd. 1.02ms from Hong Kong, HK
76.166.250.216 AS20001 Charter Communications Inc 5.94ms from Los Angeles, US
148.72.58.200 AS26496 GoDaddy.com, LLC 1.35ms from Phoenix, US
70.70.230.88 AS6327 Shaw Communications 7.11ms from Seattle, US
218.239.21.40 AS9318 SK Broadband Co Ltd 7.75ms from Seoul, KR
117.147.209.40 AS56041 China Mobile communications corporation 4.20ms from Shanghai, CN
110.150.29.24 AS1221 Telstra Limited 1.46ms from Sydney, AU
140.116.74.248 AS1659 Taiwan Academic Network (TANet) Information Center 4.42ms from Taichung, TW
85.206.69.168 AS8764 Telia Lietuva, AB 8.62ms from Vilnius, LT
80.113.229.136 AS33915 Vodafone Libertel B.V. 3.92ms from Amsterdam, NL
123.122.33.200 AS4808 China Unicom Beijing Province Network 4.63ms from Beijing, CN
115.244.160.24 AS55836 Reliance Jio Infocomm Limited 1.27ms from Chennai, IN
24.209.161.184 AS10796 Charter Communications Inc 7.28ms from Chicago, US
20.88.0.120 AS8075 Microsoft Corporation 0.30ms from Chicago, US
54.74.243.72 AS16509 Amazon.com, Inc. 0.29ms from Dublin, IE
61.145.190.72 AS4134 CHINANET-BACKBONE 3.62ms from Guangzhou, CN
116.66.192.24 AS4007 Subisu Cablenet (Pvt) Ltd, Baluwatar, Kathmandu, Nepal 0.66ms from Kathmandu, NP
190.42.31.120 AS6147 INTEGRATEL PERÚ S.A.A. 3.92ms from Lima, PE
73.54.23.8 AS7922 Comcast Cable Communications, LLC 10.42ms from Miami, US
202.226.245.120 AS7679 QTnet,Inc. 9.11ms from Osaka, JP
88.124.0.136 AS12322 Free SAS 14.62ms from Paris, FR
112.229.100.72 AS4837 CHINA UNICOM China169 Backbone 6.21ms from Qingdao, 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 203.33.133.70
traceroute to 203.33.133.70 (203.33.133.70): 64 hops max, 52 byte packets
4 [AS9044] 212.101.0.129 17.472 ms
5 [] 195.66.236.81 18.328 ms
6 [AS7575] 113.197.15.20 258.805 ms
7 *
8 [AS24510] 203.33.133.70 259.023 ms
Measurement taken from IPinfo ProbeNet in Solothurn, CH
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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