AS21534 — AS21534 - BroadSoft, Inc.
AS21534 announces 13 IPv4 prefixes covering 6,400 addresses and 4 IPv6 prefixes.
About this network
AS21534 is operated by BroadSoft, Inc., a communication software provider now part of Cisco.
What it's used for
- The address space carries corporate and service infrastructure, evidenced by netnames such as BROADSOFT-ADAPTION, BA-398, and BROADSOFT-NORTH-AMERICA.
- With 6400 IPv4 addresses announced across 13 prefixes and 16 observed neighbours, the inventory suggests an internal corporate estate or service provider network rather than a transit hub.
Notable
- Registrants include BroadSoft, Inc., Cisco Webex LLC, and Adaption Technologies Ventures, Ltd., reflecting the company's acquisition by Cisco and the integration of its assets.
- BroadSoft was acquired by Cisco Systems in 2018, leading to the rebranding of its services under the Cisco Webex umbrella.
- The address inventory is subdivided into multiple /22, /23, and /24 blocks, indicating site-by-site or service-specific segmentation.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 128.177.14.0/24
- 128.177.36.0/24
- 135.84.168.0/22
- 135.84.172.0/23
- 135.84.174.0/24
- 139.177.64.0/23
- 139.177.68.0/22
- 139.177.76.0/24
- 139.177.78.0/24
- 139.177.94.0/23
- 199.19.197.0/24
- 199.19.199.0/24
- 199.59.64.0/22
- 2a05:4200::/47
- 2a05:4200:4::/47
- 2a05:4200:b::/48
- 2a05:4200:c::/46
Upstream networks
- AS3356 Level 3 Parent, LLC
- AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
- AS2516 KDDI CORPORATION
- AS6461 Zayo Bandwidth
- AS7474 SingTel Optus Pty Ltd
- AS3257 GTT Communications Inc.
- AS13445 Cisco Webex LLC
- AS6939 Hurricane Electric LLC
- AS1299 Arelion Sweden AB
- AS64073 Vetta Group
- AS24482 SG.GS
Adjacent networks
- AS3356 Level 3 Parent, LLC
- AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
- AS2516 KDDI CORPORATION
- AS6461 Zayo Bandwidth
- AS7474 SingTel Optus Pty Ltd
- AS3257 GTT Communications Inc.
- AS13445 Cisco Webex LLC
- AS6939 Hurricane Electric LLC
- AS1299 Arelion Sweden AB
- AS64073 Vetta Group
- AS24482 SG.GS
Internet exchanges
- IX Australia (Sydney NSW) — Sydney, Australia
BGP / ASN / CIDR
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IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED