203.18.183.0/24

AS55157 · Colliers International

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Summary

Country	Australia
Domain	colliers.com
ASN	AS55157
Registry	APNIC
ID	COLLIERS-AU

WHOIS Details

inetnum:        203.18.176.0 - 203.18.183.255
netname:        COLLIERS-AU
descr:          Colliers International Holdings (Australia) Limited
descr:          Grosvenor Place
descr:          Level 12, 255 George Street
descr:          SYDNEY
descr:          NSW 2000
country:        AU
org:            ORG-CIHL2-AP
admin-c:        IH172-AP
tech-c:         IH172-AP
abuse-c:        AC1861-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-COLLIERS
mnt-routes:     MAINT-AU-COLLIERS
mnt-irt:        IRT-COLLIERS-AU
last-modified:  2020-07-09T23:03:22Z
source:         APNIC

irt:            IRT-COLLIERS-AU
address:        L30, 225 George Street
address:        Sydney
address:        NSW 2000
address:        Australia
phone:          +61-2 92570206
fax-no:         +61-2 93470777
e-mail:         anz.postmaster@colliers.com
abuse-mailbox:  anz.postmaster@colliers.com
admin-c:        IH172-AP
tech-c:         IH172-AP
auth:           # Filtered
remarks:        anz.postmaster@colliers.com was validated on 2025-10-24
mnt-by:         MAINT-AU-COLLIERS
last-modified:  2025-11-18T00:27:38Z
source:         APNIC

organisation:   ORG-CIHL2-AP
org-name:       Colliers International Holdings (AUSTRALIA) Limited
org-type:       LIR
country:        AU
address:        Level 30, Grosvenor Place, 225 George Street,
phone:          +61-2-9257-0222
fax-no:         +61-9-347-0777
e-mail:         Australia.IT@colliers.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:00Z
source:         APNIC

role:           ABUSE COLLIERSAU
country:        ZZ
address:        L30, 225 George Street
address:        Sydney
address:        NSW 2000
address:        Australia
phone:          +61-2 92570206
e-mail:         anz.postmaster@colliers.com
admin-c:        IH172-AP
tech-c:         IH172-AP
nic-hdl:        AC1861-AP
remarks:        Generated from irt object IRT-COLLIERS-AU
remarks:        anz.postmaster@colliers.com was validated on 2025-10-24
abuse-mailbox:  anz.postmaster@colliers.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-24T00:46:07Z
source:         APNIC

person:         IT Helpdesk
address:        L30, 225 George Street
address:        Sydney
address:        NSW 2000
country:        AU
phone:          +61-2 92570206
fax-no:         +61-2 93470777
e-mail:         it.help@colliers.com
nic-hdl:        IH172-AP
mnt-by:         MAINT-AU-COLLIERS
last-modified:  2020-06-30T10:24:20Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.18.0.0/16

Range	ASN	Company	Num of IPs
203.18.112.0/20	AS1221	Telstra Limited	4,096
203.18.216.0/21	AS38600	Smart Axiata Co., Ltd.	2,048
203.18.88.0/22	AS153162	Gadens	1,024
203.18.108.0/23	AS9650	CITEC	512
203.18.242.0/23	AS136000	LYNHAM NETWORKS PTY. LTD	512
203.18.156.0/23	AS152617	PPTECH co., ltd.	512
203.18.158.0/23	AS154109	Hosting Oxygen	512
203.18.96.0/23	AS37978	Launceston City Council	512
203.18.212.0/23	AS4826	VOCUS PTY LTD	512
203.18.60.0/23	AS6262	CSIRO Marine Labs, Hobart	512
203.18.184.0/23	AS9328	DEPARTMENT OF HOUSING AND WORKS	512
203.18.54.0/24	AS17378	Thales Australia	256
203.18.58.0/24	AS17477	Schwartz Family Company	256
203.18.26.0/24	AS24222	RR Donnelley India Outsource Private Limited	256
203.18.11.0/24	AS2764	Wigtown Bear Pty Ltd	256
203.18.151.0/24	AS9266	Fiveways International Limited	256
203.18.50.0/24	AS38564	NVIDIA-ASIA	256
203.18.30.0/24	AS133159	Mammoth Media Pty Ltd	256
203.18.137.0/24	AS45765	4th Floor, Weikfield IT Park	256
203.18.94.0/24	AS9268	Over The Wire Pty Ltd	256
203.18.240.0/24	AS4826	Netway Technologies Pty Ltd	256
203.18.56.0/24	AS4826	BOMBORA TECHNOLOGIES PTY LTD	256
203.18.51.0/24	AS56166	ITI (Gas Rahat Building) Campus	256
203.18.197.0/24	AS56229	PT LNS TEKNOLOGI SOLUSINDO	256
203.18.98.0/24	AS56971	Mistic Internet Security Pty Ltd	256
203.18.39.0/24	AS131769	CV Prestasi Sukses Gemilang	256
203.18.0.0/24	AS7477	SkyMesh Pty Ltd	256
203.18.79.0/24	AS7545	Hi-Speed Networking	256
203.18.1.0/24	AS7575	National Gallery of Victoria	256
203.18.63.0/24	AS7575	Powerhouse Museum	256
203.18.23.0/24	AS7600	Escapenet Pty Ltd	256
203.18.104.0/24	AS136938	PT Yoan Corp Indonesian	256
203.18.174.0/24	AS142590	Ambulance Victoria	256
203.18.245.0/24	AS14618	LINKED STORE BRASIL CRIACAO E DESENVOL DE SOFTWARE	256
203.18.78.0/24	AS7647	OnTheNet Pty Ltd	256
203.18.59.0/24	AS134673	GISBORNE.NET.N.Z. LIMITED	256
203.18.176.0/24	AS852	Colliers International Canada	256

Hosted domains

There are 5 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.18.183.178	prdsouthport.com.au	3
203.18.183.102	colliers.nz	1
203.18.183.204	colliersfm.com	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
203.18.183.245	AS55157 Colliers International	`0.79ms` from Sydney, 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
178.156.247.72	AS213230 Hetzner Online GmbH	`0.14ms` from Ashburn, US
4.227.139.248	AS8075 Microsoft Corporation	`0.60ms` from Ashburn, US
150.164.199.120	AS271354 UNIVERSIDADE FEDERAL DE MINAS GERAIS	`1.52ms` from Belo Horizonte, BR
87.182.101.168	AS3320 Deutsche Telekom AG	`1.27ms` from Berlin, DE
54.200.212.232	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
75.110.239.24	AS19108 Optimum	`16.21ms` from Chicago, US
177.16.21.184	AS18881 TELEFÔNICA BRASIL S.A	`1.12ms` from Curitiba, BR
3.76.113.56	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
123.25.216.104	AS45899 VNPT Corp	`1.80ms` from Ho Chi Minh City, VN
104.173.90.136	AS20001 Charter Communications Inc	`4.92ms` from Los Angeles, US
185.221.206.216	AS61323 ANS ACADEMY LIMITED	`0.43ms` from Manchester, GB
213.21.148.216	AS3302 Retelit Digital Services S.p.A.	`18.21ms` from Milan, IT
159.195.95.184	AS214996 netcup GmbH	`0.29ms` from Singapore, SG
115.171.58.24	AS4847 China Networks Inter-Exchange	`3.44ms` from Tianjin, CN
169.50.176.8	AS36351 IBM Cloud	`1.06ms` from Amsterdam, NL
52.33.52.136	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
75.156.181.216	AS852 TELUS Communications Inc.	`4.60ms` from Calgary, CA
75.182.166.120	AS11426 Charter Communications Inc	`5.02ms` from Charlotte, US
18.189.137.104	AS16509 Amazon.com, Inc.	`0.18ms` from Columbus, US
52.161.18.232	AS8075 Microsoft Corporation	`3.44ms` from Denver, US
142.167.47.152	AS855 Bell Canada	`6.40ms` from Fredericton, CA
165.101.123.104	AS154010 Xi'an WeiShiJi Network Technology LTD	`1.60ms` from Hong Kong, HK
67.205.128.248	AS14061 DigitalOcean, LLC	`0.27ms` from New York City, US
88.176.86.8	AS12322 Free SAS	`9.54ms` from Paris, FR
86.236.55.216	AS3215 Orange S.A.	`7.56ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 203.18.183.196

traceroute to 203.18.183.196 (203.18.183.196): 64 hops max, 52 byte packets

1 [AS49544] 109.200.214.195 0.401 ms

2 [AS3549] 113.29.127.229 1.26 ms

3 [AS7545] 203.219.107.181 0.551 ms

4 [AS7545] 203.29.134.86 1.107 ms

5 *

6 [AS7545] 61.68.16.158 0.524 ms

7 *

8 [AS55157] 203.18.183.196 2.211 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On March 20th 2026

What are IP address ranges?

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