211.31.80.0/20

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 2025-06-18
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2025-06-18T01:06:29Z
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 2025-06-18
abuse-mailbox:  abuse@optusnet.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-06-18T01:06:46Z
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 211.31.80.0/20

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

Nearby Ranges

BGP prefixes that overlap with 211.31.0.0/16

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

Read more

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
145.90.0.132	AS1103 SURF B.V.	0.44ms from Amsterdam, NL
79.166.22.20	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	1.64ms from Athens, GR
107.142.103.100	AS7018 AT&T Enterprises, LLC	6.86ms from Atlanta, US
201.252.192.52	AS7303 Telecom Argentina S.A.	1.52ms from Cordoba, AR
162.200.33.52	AS7018 AT&T Enterprises, LLC	2.43ms from Dallas, US
195.245.4.228	AS6735 TNG Stadtnetz GmbH	5.58ms from Frankfurt am Main, DE
47.56.216.228	AS45102 Alibaba (US) Technology Co., Ltd.	1.14ms from Hong Kong, HK
90.250.122.20	AS5378 Vodafone Limited	15.02ms from London, GB
185.70.243.4	AS59803 DATAQUEST (HEATHROW) LIMITED	0.55ms from London, GB
104.60.242.116	AS7018 AT&T Enterprises, LLC	3.34ms from Los Angeles, US
62.83.225.212	AS12430 VODAFONE ESPANA S.A.U.	2.13ms from Madrid, ES
116.74.70.52	AS17488 Hathway IP Over Cable Internet	7.28ms from Mumbai, IN
90.83.178.196	AS3215 Orange S.A.	7.99ms from Paris, FR
52.7.237.36	AS14618 Amazon.com, Inc.	0.23ms from Reston, US
59.93.94.36	AS9829 National Internet Backbone	12.58ms from Saint Thomas Mount, IN
1.219.176.36	AS3786 LG DACOM Corporation	2.77ms from Seoul, KR
175.236.255.116	AS4766 Korea Telecom	1.34ms from Seoul, KR
27.233.156.36	AS4766 Korea Telecom	1.83ms from Seoul, KR
103.42.113.4	AS132819 Aldford Network Solutions Limited	0.66ms from Taipei, TW
122.17.79.4	AS4713 NTT Communications Corporation	19.64ms from Tokyo, JP
2.182.205.228	AS58224 Iran Telecommunication Company PJS	14.55ms from Yerevan, AM
141.57.123.196	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	6.96ms from Berlin, DE
188.36.112.116	AS5483 Magyar Telekom Plc.	2.60ms from Budapest, HU
98.193.113.148	AS7922 Comcast Cable Communications, LLC	7.21ms from Chicago, US
220.161.101.20	AS4134 CHINANET-BACKBONE	2.64ms from Fuzhou, CN

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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