Summary
- Hostname
- —
- ASN
- AS7474
- Organization
- SingTel Optus Pty Ltd
- Network
- OPTUSCOM-AU
- Range
- 124.19.0.0 - 124.19.127.255
- /24 block
- 124.19.72.0/24
- Country
- AU
- Blacklists
- 1 of 14
- Abuse contact
- [email protected]
Presence of 124.19.72.0 in blacklists
| List | Status |
|---|---|
| zen.spamhaus.org | Listed |
| bl.spamcop.net | Not listed |
| black.junkemailfilter.com | Not listed |
| multi.surbl.org | Not listed |
| dnsbl.sorbs.net | Not listed |
| b.barracudacentral.org | Not listed |
| dnsbl.tornevall.org | Not listed |
| dnsbl.httpbl.org | Not listed |
| dnsbl-1.uceprotect.net | Not listed |
| dnsbl-2.uceprotect.net | Not listed |
| dnsbl-3.uceprotect.net | Not listed |
| v4.fullbogons.cymru.com | Not listed |
| bl.blocklist.de | Not listed |
| rbl.blockedservers.com | Not listed |
What is a blacklist (RBL)?
An RBL (Real-time Blackhole List), also known as a DNSBL (DNS-based Blackhole List), is a mechanism used to fight spam by blocking e-mails coming from sources known to send spam. RBLs are databases listing the IP addresses deemed responsible for sending unsolicited e-mail. Mail server administrators use these lists to filter incoming e-mails by checking whether the sender's IP address appears in one or more RBLs. If it does, the e-mail may be rejected or subjected to additional checks.
There are different types of RBLs, each with its own criteria for listing IP addresses. Some focus on IP addresses that send spam directly, while others list IP addresses belonging to networks known to host computers infected with malware and used as bots to send spam. RBL operators keep their lists up to date through automatic and manual contributions, and IP address owners can often request removal from a list if they believe the listing is unjustified.
WHOIS data for 124.19.72.0
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '124.19.0.0 - 124.19.127.255'
% Abuse contact for '124.19.0.0 - 124.19.127.255' is '[email protected]'
inetnum: 124.19.0.0 - 124.19.127.255
netname: OPTUSCOM-AU
descr: Optus Macquarie Park (OCS)
descr: Building A, Level 2
descr: 1 Lyonpark Road,
descr: Macquarie Park
country: AU
org: ORG-SOPL2-AP
admin-c: OA3-AP
tech-c: OA3-AP
abuse-c: AO399-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-OPTUSCOM-AP
mnt-routes: MAINT-OPTUSCOM-AP
mnt-irt: IRT-OPTUSCOM-AU
last-modified: 2021-01-15T01:45:01Z
source: APNIC
irt: IRT-OPTUSCOM-AU
address: SingTel Optus Pty Ltd
address: Optus Macquarie Park (OCS)
address: 1 Lyonpark Road
address: Macquarie Park NSW 2113
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: OA3-AP
tech-c: OA3-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-07-01
mnt-by: MAINT-OPTUSCOM-AP
last-modified: 2026-07-12T00:05:20Z
source: APNIC
organisation: ORG-SOPL2-AP
org-name: SingTel Optus Pty Ltd
org-type: LIR
country: AU
address: Optus Macquarie Park (OCS)
address: 1 Lyonpark Road, Macquarie Park
phone: +61-2-8082-7800
fax-no: +61-2-8082-7100
e-mail: [email protected]
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2025-09-25T13:05:45Z
source: APNIC
role: ABUSE OPTUSCOMAU
country: ZZ
address: SingTel Optus Pty Ltd
address: Optus Macquarie Park (OCS)
address: 1 Lyonpark Road
address: Macquarie Park NSW 2113
phone: +000000000
e-mail: [email protected]
admin-c: OA3-AP
tech-c: OA3-AP
nic-hdl: AO399-AP
remarks: Generated from irt object IRT-OPTUSCOM-AU
remarks: [email protected] was validated on 2026-07-01
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-07-01T00:03:25Z
source: APNIC
role: OPTUS IP ADMINISTRATORS
address: SingTel Optus Pty Ltd
address: Optus Macquarie Park (OCS)
address: 1 Lyonpark Road
address: Macquarie Park NSW 2113
address: AUSTRALIA
country: AU
phone: +61 2 8082 7800
fax-no: +61 2 8082 7100
e-mail: [email protected]
remarks: send spam/abuse reports to [email protected]
remarks: please use http://www.apnic.net/db/spam.html
remarks: to identify networks before sending reports and
remarks: always include full headers/logs.
admin-c: NC8-AP
admin-c: IA65-AP
tech-c: NC8-AP
tech-c: IA65-AP
tech-c: OH23-AP
nic-hdl: OA3-AP
notify: [email protected]
mnt-by: MAINT-OPTUSCOM-AP
last-modified: 2011-12-06T00:10:13Z
source: APNIC
% Information related to '124.19.72.0/24AS7474'
route: 124.19.72.0/24
origin: AS7474
descr: SingTel Optus Pty Ltd
Optus Macquarie Park (OCS)
Building A, Level 2
1 Lyonpark Road,
Macquarie Park
mnt-by: MAINT-OPTUSCOM-AP
last-modified: 2021-09-17T02:14:36Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-UK2)
Related domain names
Domains mentioned in the reverse DNS and the WHOIS of 124.19.72.0.
What is an IP address?
An IP address is a unique identifier on the internet that identifies a server or an internet user. Here the IP address is 124.19.72.0: it may be the unique address used to reach a website, or the unique address of an internet user.
An SMTP server (a server used to send e-mails) must have a reverse DNS record associated with its IP address