AS20340 — CALLTOWER - CallTower, Inc.

Network type: hosting

AS20340 announces 15 IPv4 prefixes covering 37,632 addresses and 0 IPv6 prefixes.

About this network

The AS handle CALLTOWER is held by CallTower, Inc.

What it's used for

• The address space carries VoIP and unified communications infrastructure, evidenced by reverse DNS records pointing to ptr.calltower.com and a single entry for network.encore-insurance.com.
• The AS announces 37,632 IPv4 addresses across 23 prefixes and maintains 99 observed neighbours, a ratio that indicates a business-oriented network providing connectivity for cloud-based telephony services rather than a residential access provider.

Notable

• Registrants for the majority of prefixes are listed as CallTower, Inc., while two prefixes (205.196.168.0/21 and 208.70.112.0/21) are registered to Straitshot Communications, Inc. under netnames beginning with APPIA-NET.
• The address inventory is composed of multiple /20 and /21 blocks, with the largest being 206.80.64.0/19, reflecting a consolidated corporate estate for a unified communications provider.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 64.34.45.0/24
• 65.39.213.0/24
• 67.213.176.0/20
• 69.4.176.0/20
• 69.54.64.0/22
• 69.54.70.0/23
• 69.54.72.0/21
• 69.54.80.0/20
• 165.254.122.0/24
• 205.196.168.0/21
• 206.80.64.0/19
• 208.52.155.0/24
• 208.52.156.0/24
• 208.70.112.0/21
• 209.40.224.0/19

Upstream networks

• AS6939 Hurricane Electric LLC
• AS8220 COLT Technology Services Group Limited
• AS16260 EMEA Ltd.
• AS174 Cogent Communications, LLC
• AS19855 Masergy Communications, Inc.
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS3257 GTT Communications Inc.
• AS13768 Aptum Technologies
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS34549 meerfarbig GmbH & Co. KG
• AS2914 NTT America, Inc.
• AS6797 GlobalConnect AB
• AS37100 SEACOM Limited
• AS8551 Bezeq International Ltd.
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS12779 IT.Gate S.p.A.
• AS213241 TECHIT.BE SRL
• AS20485 Joint Stock Company TransTeleCom
• AS48362 Stadtwerke Feldkirch

Downstream networks

• AS46168 CallTower, Inc.

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS8220 COLT Technology Services Group Limited
• AS3257 GTT Communications Inc.
• AS16260 EMEA Ltd.
• AS174 Cogent Communications, LLC
• AS46168 CallTower, Inc.
• AS19855 Masergy Communications, Inc.
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS13768 Aptum Technologies
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS34549 meerfarbig GmbH & Co. KG
• AS2914 NTT America, Inc.
• AS212024 Marc Schmitt
• AS37100 SEACOM Limited
• AS6797 GlobalConnect AB
• AS20485 Joint Stock Company TransTeleCom
• AS12779 IT.Gate S.p.A.
• AS34019 Hivane Association
• AS8551 Bezeq International Ltd.
• AS213241 TECHIT.BE SRL
• AS48362 Stadtwerke Feldkirch

Routing security

• RPKI: 4 valid, 0 invalid and 16 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 75% of announcements registered; 34 route objects.
• Listed in as-sets: AS-APPIA, AS-CHTR-SYNC, AS-DRIX, AS-GTTCUST, AS-HURRICANE, AS-ITXBR1, AS-NWN-TRANSIT, AS-RR-SYNC, AS-STRATUS-TRANSIT, AS-TAIPAN-CPOC-9, AS-TRANSROUTE-SPEC, AS-WINDSTREAM-CUST, AS13335:AS-CUSTOMERS, AS13768:AS-CUSTOMERS, AS17494:AS-CUSTOMERS, AS203462:AS-NVC-DECIX_FRA_RS, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS7474:AS-CUSTOMERS, AS8220:AS-COLTDE, AS8220:AS-COLTUK.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Equinix Internet Exchange Ashburn — Ashburn, United States
• Coresite - Any2 West — Los Angeles, United States
• Any2 California — Los Angeles, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• Digital Realty Atlanta Internet Exchange — Atlanta, United States