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Autonomous System details for AS20340

AS20340
CallTower, Inc. • calltower.com

AS20340 — CallTower, Inc.

AS Name
CALLTOWER
Country
United States (US)
Website
Number of IPv4
39,936
Number of IPv6
0
ASN type
Hosting
Status
Assigned
Registry
ARIN
Allocated
April 25, 2001
Last updated
November 21, 2025

IP Ranges

19 IPv4 prefixes
Prefix Company Number of IPs
64.34.45.0/24 Aptum Technologies 256
65.39.213.0/24 Aptum Technologies 256
67.213.176.0/20 CallTower, Inc. 4,096
67.213.177.0/24 CallTower, Inc. 256
67.213.179.0/24 CallTower, Inc. 256
67.213.184.0/24 CallTower, Inc. 256
67.213.185.0/24 CallTower, Inc. 256
67.213.186.0/24 CallTower, Inc. 256
67.213.187.0/24 CallTower, Inc. 256
69.4.176.0/20 CallTower, Inc. 4,096
69.54.64.0/19 CallTower, Inc. 8,192
165.254.122.0/24 NTT America, Inc. 256
205.196.168.0/21 Straitshot Communications, Inc. 2,048
206.80.64.0/19 CallTower, Inc. 8,192
208.52.155.0/24 ISPHONE, INC. 256
208.52.156.0/24 ISPHONE, INC. 256
208.70.112.0/21 Straitshot Communications, Inc. 2,048
209.40.224.0/19 CallTower, Inc. 8,192
209.40.252.0/24 CallTower, Inc. 256

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Upstreams of AS20340

10 upstreams

AS20340 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS20340 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS20340

1 downstreams

AS20340 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

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