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ASN Lookup Tool
AS21928 T-MOBILE-AS21928

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS21928
Organisation
T-Mobile USA, Inc.
Name
T-MOBILE-AS21928
Total IPv4 Addresses
13780302
Total IPv4 Prefixes
418
Total IPv6 Prefixes
326
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#35 out of 76,346
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2002-06-12
Registration Last Change
2012-02-24
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS22850
US flagPIT US
AS33891
DE flagCore-Backbone GmbH
AS4766
KR flagKorea Telecom
AS3356
US flagLevel 3 Parent, LLC
AS852
CA flagTELUS Communications Inc.
Showing 5 of 78
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS400318
US flagVersa Networks, Inc.
AS22140
US flagT-Mobile USA, Inc.
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix24.221.0.0/21
Range From24.221.0.0
Range To24.221.7.255
Prefix24.221.8.0/21
Range From24.221.8.0
Range To24.221.15.255
Prefix24.221.16.0/20
Range From24.221.16.0
Range To24.221.31.255
Prefix24.221.32.0/21
Range From24.221.32.0
Range To24.221.39.255
Prefix24.221.40.0/21
Range From24.221.40.0
Range To24.221.47.255
Showing 5 of 418
IPv6 Active Prefixes
Prefix2001:4870:140::/44
Range From2001:4870:140::
Range To2001:4870:14f:ffff:ffff:ffff:ffff:ffff
Prefix2001:4870:150::/44
Range From2001:4870:150::
Range To2001:4870:15f:ffff:ffff:ffff:ffff:ffff
Prefix2001:4870:e00b::/48
Range From2001:4870:e00b::
Range To2001:4870:e00b:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb90::/40
Range From2607:fb90::
Range To2607:fb90:ff:ffff:ffff:ffff:ffff:ffff
Prefix2607:fb90:100::/40
Range From2607:fb90:100::
Range To2607:fb90:1ff:ffff:ffff:ffff:ffff:ffff
Showing 5 of 326
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.