SingTel Optus Pty Ltd
BGP inherited
Cluster stats
| Netblocks | 771 · 10,724,767 IPv4 addresses |
| Registered in | Australia (579) · Singapore (63) · United States (2) · India (2) · New Zealand (2) · France (1) |
| Cluster ID | 213420649 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 44 shared RIR contact/maintainer handles |
| Registry names | 5 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
6 weekly snapshots · JSON
771
-170 netblocks since 2026-07-05
2026-07-05
peak 941
2026-07-26
IP Ranges (771)
showing 50 of 771 — see all — ⬇ export CSV (free export limited to 500 rows — subscribe for the full export)| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 1.40.0.0/14 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.40.0.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.40.64.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.40.128.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.40.192.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.41.0.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.41.64.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.41.128.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.41.192.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.42.0.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.42.64.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.42.128.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.43.0.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.43.64.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.43.128.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.43.192.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.0.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.0.0/16 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.24.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.48.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.160.0/23 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.162.0/23 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.164.0/23 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 1.44.166.0/23 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 43.247.72.0/24 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.2.0.0/15 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.3.0.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.3.128.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.0.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.0.0/12 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.64.0/18 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.128.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.144.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.160.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.176.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.192.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.208.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.216.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.224.0/20 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.240.0/21 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.248.0/22 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.176.252.0/22 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.177.0.0/16 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.178.0.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.178.128.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.179.0.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.180.0.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.180.128.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.181.0.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
| 49.181.128.0/17 | SingTel Optus Pty Ltd | BGP | ANNOUNCED | ● high |
Domains hosted in this network
what's this?Customer-delegated space
how is this classified?Network trust
what's this?
RPKI hygiene: B
how networks compare →
80.7%
of checked blocks have valid RPKI ROA coverage
(622 of 771)
Possible discrepancies (1)
These blocks are registered to SingTel Optus Pty Ltd but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 203.17.138.0/24 /24 | authorized for AS14618 — Amazon.com, Inc. |
NIC Handles
AO399-AP
APNIC-HM
ARS2-AP
ARS2-AP
AS10128
AS10150
AS10218
AS10221
AS17461
AS17719
AS18191
AS24510
+32 more