211.28.12.0/24

AS4804  ·  Microplex PTY LTD

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Summary

Country Australia
Domain optus.net.au
ASN AS4804
Parent Range 211.28.0.0/14
Registry APNIC
ID OPTUSINTERNET-AU

WHOIS Details

inetnum:        211.28.0.0 - 211.31.255.255
netname:        OPTUSINTERNET-AU
descr:          OPTUS INTERNET - RETAIL
descr:          INTERNET SERVICES
descr:          Chatswood, Sydney
country:        AU
org:            ORG-OIPL5-AP
admin-c:        OI3-AP
tech-c:         OI3-AP
abuse-c:        AO400-AP
status:         ALLOCATED 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-lower:      MAINT-AU-OPTUSINTERNET
mnt-routes:     MAINT-AU-OPTUSINTERNET
mnt-irt:        IRT-OPTUSINTERNET-AU
last-modified:  2024-02-05T08:16:29Z
source:         APNIC

irt:            IRT-OPTUSINTERNET-AU
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
e-mail:         abuse@optusnet.com.au
abuse-mailbox:  abuse@optusnet.com.au
admin-c:        OI3-AP
tech-c:         OI3-AP
auth:           # Filtered
remarks:        abuse@optusnet.com.au was validated on 2025-12-23
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2025-12-23T22:44:35Z
source:         APNIC

organisation:   ORG-OIPL5-AP
org-name:       Optus Internet Pty Ltd
org-type:       LIR
country:        AU
address:        Building F, 3rd Floor
address:        1 Lyonpark Road
phone:          +61-2-8087-0020
fax-no:         +61-2-8085-5108
e-mail:         abuse@optusnet.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:50Z
source:         APNIC

role:           ABUSE OPTUSINTERNETAU
country:        ZZ
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
phone:          +000000000
e-mail:         abuse@optusnet.com.au
admin-c:        OI3-AP
tech-c:         OI3-AP
nic-hdl:        AO400-AP
remarks:        Generated from irt object IRT-OPTUSINTERNET-AU
remarks:        abuse@optusnet.com.au was validated on 2025-12-23
abuse-mailbox:  abuse@optusnet.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-23T22:44:46Z
source:         APNIC

role:           Optus Internet
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
country:        AU
phone:          +61-2-8082 7800
fax-no:         +61-2-8082 7100
e-mail:         ipadmin@optus.net.au
admin-c:        OI1-AP
tech-c:         OI1-AP
nic-hdl:        OI3-AP
notify:         ipadmin@optus.net.au
mnt-by:         MAINT-AU-OPTUSINTERNET
remarks:        send spam/abuse reports to abuse@optusnet.com.au
remarks:        please use http://wq.apnic.net/apnic-bin/whois.pl
remarks:        to identify networks before sending reports and
remarks:        always include full headers/logs.
last-modified:  2021-09-07T23:35:56Z
source:         APNIC

route:          211.28.0.0/14
origin:         AS4804
descr:          Optus Internet Pty Ltd Building F, 3rd Floor 1 Lyonpark Road
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2024-02-05T08:47:53Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 211.28.12.0/24

Range ASN Company Num of IPs
211.28.0.0/14 AS4804 OPTUS INTERNET - RETAIL 262,144

Nearby Ranges

BGP prefixes that overlap with 211.28.0.0/16

Range ASN Company Num of IPs
211.28.0.0/14 AS4804 OPTUS INTERNET - RETAIL 262,144

Hosted domains

There are no domains currently hosted on this ASN.

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

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
52.226.212.40 AS8075 Microsoft Corporation 0.42ms from Ashburn, US
101.243.143.8 AS17429 BEIJING GEHUA CATV NETWORK CO.LTD 10.11ms from Beijing, CN
152.202.21.200 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 12.14ms from Bogota, CO
84.159.55.232 AS3320 Deutsche Telekom AG 3.39ms from Frankfurt am Main, DE
165.138.140.232 AS11686 Zayo Bandwidth 13.79ms from Indianapolis, US
70.179.135.56 AS22773 Cox Communications Inc. 11.15ms from Kansas City, US
179.49.69.88 AS262168 COLINANET S.A. 0.28ms from Lima, PE
86.158.216.120 AS2856 British Telecommunications PLC 5.54ms from London, GB
81.167.201.216 AS29695 Altibox AS 8.26ms from Oslo, NO
189.244.23.184 AS8151 UNINET 10.93ms from Santiago de Queretaro, MX
186.203.57.104 AS26615 TIM S/A 1.41ms from Sao Paulo, BR
54.254.253.104 AS16509 Amazon.com, Inc. 0.11ms from Singapore, SG
59.151.35.40 AS9308 Abitcool(China) Inc. 2.60ms from Tianjin, CN
111.216.54.104 AS2527 Sony Network Communications Inc. 1.96ms from Tokyo, JP
154.248.220.168 AS36947 Telecom Algeria 11.88ms from Algiers, DZ
147.102.176.200 AS3323 National Technical University of Athens 2.47ms from Athens, GR
210.12.112.216 AS4808 China Unicom Beijing Province Network 3.46ms from Beijing, CN
34.214.236.216 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
24.162.80.184 AS11427 Charter Communications Inc 8.19ms from Dallas, US
70.59.34.232 AS209 CenturyLink Communications, LLC 1.88ms from Denver, US
122.163.70.40 AS24560 Bharti Airtel Ltd., Telemedia Services 1.75ms from Kolkata, IN
86.137.6.136 AS2856 British Telecommunications PLC 1.99ms from London, GB
20.108.111.56 AS8075 Microsoft Corporation 0.25ms from London, GB
38.134.57.56 AS152672 Aiyun (HK) Network 0.57ms from Los Angeles, US
84.220.103.248 AS8612 Tiscali Italia S.P.A. 16.75ms from Milan, IT

Traceroute

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

$
traceroute -a -n -q1 -f5 -m13 211.28.12.163
traceroute to 211.28.12.163 (211.28.12.163): 13 hops max, 52 byte packets
5 [AS3257] 98.124.179.73 0.553 ms
6 [AS3257] 89.149.130.14 51.64 ms
8 *
9 *
10 [AS4804] 210.49.118.50 300.817 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Toronto, CA
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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