1. All IP Ranges
  2. 123.0.0.0/8
  3. 123.208.0.0/16
  4. AS135887  | 123.208.172.0/23

123.208.172.0/23

AS135887  ·  Belong (Telstra Limited)

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Summary

Country Australia
Domain telstra.net
ASN AS135887
Parent Range 123.208.0.0/16
Registry APNIC
ID TELSTRAINTERNET46-AU

WHOIS Details

inetnum:        123.208.0.0 - 123.208.255.255
netname:        TELSTRAINTERNET46-AU
descr:          Telstra Internet
country:        AU
admin-c:        TIAR-AP
tech-c:         TIAR-AP
abuse-c:        AT1005-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-AU-TIAR-AP
mnt-lower:      MAINT-AU-TIAR-AP
mnt-irt:        IRT-TELSTRA-AU
last-modified:  2024-06-18T07:24:07Z
geofeed:        https://geofeed.tools.telstra.net/geofeed.csv
source:         APNIC

irt:            IRT-TELSTRA-AU
address:        Telstra Internet
e-mail:         abuse@telstra.net
abuse-mailbox:  abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
auth:           # Filtered
remarks:        abuse@telstra.net was validated on 2026-01-26
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2026-01-26T01:19:20Z
source:         APNIC

role:           ABUSE TELSTRAAU
country:        ZZ
address:        Telstra Internet
phone:          +000000000
e-mail:         abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        AT1005-AP
remarks:        Generated from irt object IRT-TELSTRA-AU
remarks:        abuse@telstra.net was validated on 2026-01-26
abuse-mailbox:  abuse@telstra.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-26T01:19:29Z
source:         APNIC

person:         Telstra Internet Address Registry
address:        Telstra Internet
address:        242 Exhibition St
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 000000000
e-mail:         addressing@telstra.net
nic-hdl:        TIAR-AP
remarks:        Telstra Internet Address Registry Role Object
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2021-12-09T22:28:56Z
source:         APNIC

route:          123.208.0.0/16
origin:         AS135887
descr:          Telstra Corporation 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2020-04-17T07:06:22Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 123.208.172.0/23

Range ASN Company Num of IPs
123.208.0.0/16 AS135887 Telstra Internet 65,536

Nearby Ranges

BGP prefixes that overlap with 123.208.0.0/16

Range ASN Company Num of IPs
123.208.0.0/16 AS135887 Telstra Internet 65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Read more

Pingable IPs

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

IP Address ASN Details
123.208.172.11 AS135887 Belong (Telstra Limited) 2.39ms from Sydney, AU
123.208.173.254 AS135887 Belong (Telstra Limited) 1.47ms 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
101.177.134.119 AS1221 Telstra Limited 4.55ms from Brisbane, AU
174.28.9.215 AS209 CenturyLink Communications, LLC 9.30ms from Denver, US
139.6.144.7 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 3.61ms from Duesseldorf, DE
84.133.119.215 AS3320 Deutsche Telekom AG 2.29ms from Frankfurt am Main, DE
148.253.56.199 AS54994 Meteverse Limited. 0.62ms from Hong Kong, HK
70.114.144.23 AS11427 Charter Communications Inc 10.42ms from Houston, US
90.197.51.23 AS5607 Sky UK Limited 3.79ms from London, GB
83.49.206.183 AS3352 TELEFONICA DE ESPANA S.A.U. 7.93ms from Madrid, ES
2.97.201.231 AS13285 TalkTalk Communications Limited 7.25ms from Manchester, GB
16.51.59.215 AS16509 Amazon.com, Inc. 0.68ms from Melbourne, AU
94.94.134.119 AS3269 Telecom Italia S.p.A. 3.93ms from Milan, IT
117.89.180.55 AS134756 CHINANET Nanjing Jishan IDC network 0.36ms from Nanjing, CN
183.176.110.87 AS7522 STNet, Incorporated 5.76ms from Osaka, JP
191.163.48.199 AS26615 TIM S/A 2.09ms from Osasco, BR
13.85.190.103 AS8075 Microsoft Corporation 0.20ms from San Antonio, US
146.19.95.71 AS6424 EDGOO NETWORKS 0.26ms from Sao Paulo, BR
58.89.124.135 AS4713 NTT DOCOMO BUSINESS,Inc. 3.51ms from Tokyo, JP
37.77.155.167 AS29314 VECTRA S.A. 9.76ms from Warsaw, PL
104.18.128.231 AS13335 Cloudflare, Inc. 0.11ms from Wrocław, PL
24.254.249.39 AS22773 Cox Communications Inc. 9.00ms from Ashburn, US
111.197.6.7 AS4808 China Unicom Beijing Province Network 3.48ms from Beijing, CN
109.134.174.199 AS5432 Proximus NV 1.08ms from Brussels, BE
68.150.203.55 AS6327 Shaw Communications 3.75ms from Edmonton, CA
68.55.187.71 AS7922 Comcast Cable Communications, LLC 11.19ms from Flint, US
125.249.88.119 AS9316 DACOM-PUBNETPLUS 2.05ms from Incheon, KR

Traceroute

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

$
traceroute -a -n -q1 123.208.172.11
traceroute to 123.208.172.11 (123.208.172.11): 64 hops max, 52 byte packets
2 *
4 *
5 [AS6939] 184.105.81.29 159.702 ms
6 *
7 *
8 [AS6939] 184.104.192.134 163.321 ms
9 [AS6939] 216.66.89.122 164.402 ms
10 *
11 *
12 *
13 [AS1221] 203.50.13.93 395.086 ms
14 [AS1221] 203.50.6.101 409.209 ms
15 [AS1221] 203.50.6.109 394.706 ms
16 [AS1221] 203.50.11.177 393.564 ms
17 [AS1221] 61.8.25.26 394.097 ms
18 *
19 [AS1221] 58.162.27.65 394.318 ms
20 *
21 [AS135887] 123.208.172.11 407.581 ms
Measurement taken from IPinfo ProbeNet in Sepang, MY
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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