EXTREME TECHNOLOGY INC.
EXTREME COMMUNICATIONS TECHNOLOGY LIMITED
Data as of 2026-08-23
GLEIF verified
LEI
984500795G2CCFD4EB04
Registered name
EXTREME TECHNOLOGY INC.
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 71 · 22,528 IPv4 addresses |
| Registered in | SC (37) · Germany (6) · United Arab Emirates (5) · South Korea (4) · Canada (3) · Indonesia (3) |
| Cluster ID | 226908844 |
| Registry | AFRINIC |
| Owner jurisdiction | CA-ON |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 984500795G2CCFD4EB04 |
| Shared handles | clustered on 47 shared RIR contact/maintainer handles |
| Registry names | 7 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
9 weekly snapshots · JSON
76
+13 netblocks since 2026-07-05
2026-07-05
peak 76
2026-08-23
IP Ranges (71)
showing 50 of 71 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 23.137.188.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 23.157.236.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 23.160.132.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.192.112.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.192.115.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.198.231.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.16.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.17.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.18.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.19.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.20.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.21.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.22.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.23.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.24.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.25.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.28.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.29.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.30.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.31.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.32.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.36.0/22 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 45.201.40.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 49.128.222.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 51.194.250.0/24 | EXTREME-COMMUNICATIONS-TECHNOLOGY-LIMITED | RIPE | ASSIGNED PA | ● high |
| 66.232.60.0/22 | Extreme Technology Corporation | ARIN | DIRECT ALLOCATION | ● high |
| 95.134.81.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 103.129.199.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 103.181.248.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 103.229.118.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 112.196.199.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 112.196.215.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 124.66.221.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.83.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.100.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.104.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.111.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.115.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 145.79.119.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 148.59.118.0/23 | Extreme Technology Corporation | ARIN | DIRECT ALLOCATION | ● high |
| 151.246.215.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 151.247.48.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 151.247.82.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 154.83.104.0/21 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.225.2.0/23 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.225.50.0/23 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.249.158.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.249.159.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.249.161.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
| 156.249.163.0/24 | EXTREME COMMUNICATIONS TECHNOLOGY LIMITED | BGP | ANNOUNCED | ● high |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
96.1%
of checked blocks have valid RPKI ROA coverage
(73 of 76)
Wholesale/transit re-announcements (34)
These blocks are registered to EXTREME COMMUNICATIONS TECHNOLOGY LIMITED but cryptographically authorized across 10 different networks — typical for a large wholesale or transit carrier whose address space is substantially re-announced by downstream customers under their own ASNs, not individually noteworthy.
| 51.194.250.0/24 /24 | authorized for AS210655 — Brian LaCrette |
| 151.247.48.0/24 /24 | authorized for AS14618 — Amazon.com, Inc. |
| 162.4.57.0/24 /24 | authorized for AS10031 — WebSatMedia Pte Ltd |
| 45.204.149.0/24 /24 | authorized for AS2914 — NTT America, Inc. |
| 45.204.150.0/24 /24 | authorized for AS2914 — NTT America, Inc. |
| 45.204.151.0/24 /24 | authorized for AS2914 — NTT America, Inc. |
| 23.137.188.0/24 /24 | authorized for AS63023 — GTHost |
| 23.157.236.0/24 /24 | authorized for AS402363 — KEYSTONE NETWORKS COMMUNICATIONS INC |
| 45.192.115.0/24 /24 | authorized for AS63099 — MADEALA TELECOM TECHNOLOGY INC |
| 45.198.231.0/24 /24 | authorized for AS63099 — MADEALA TELECOM TECHNOLOGY INC |
| 45.201.30.0/24 /24 | authorized for AS63099 — MADEALA TELECOM TECHNOLOGY INC |
| 45.201.31.0/24 /24 | authorized for AS63099 — MADEALA TELECOM TECHNOLOGY INC |
| 45.201.32.0/24 /24 | authorized for AS63099 — MADEALA TELECOM TECHNOLOGY INC |
| 103.129.199.0/24 /24 | authorized for AS135542 — LIGHT CLOUD TECHNOLOGY |
| 145.79.83.0/24 /24 | authorized for AS2914 — NTT America, Inc. |
+19 more — see the REST API
NIC Handles
AI816-AP
AR834
AR834
AS10031
AS135542
AS202036
AS38705
AS402363
AS63023
AW869-AP
BARNA79-ARIN
CIL1-MNT
+35 more