Country
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ASN LANDING PAGE
AS21928
T-MOBILE-AS21928 - T-Mobile USA, Inc.
Last updated · Jul 20, 2026
Total prefixes
525
IPv4 prefixes
269
IPv6 prefixes
256
ASN summary
How to read the scale of AS21928
T-MOBILE-AS21928 - T-Mobile USA, Inc. currently reports 525 prefixes and 43 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
T-MOBILE-AS21928 - T-Mobile USA, Inc. is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS21928 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS21928 ASN lookupAS21928 BGPAS21928 peersAS21928 prefixesAS21928 upstreamsT-MOBILE-AS21928 - T-Mobile USA, Inc. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS6461
AS6461
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AS3356
AS3356
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AS174
AS174
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AS6939
AS6939
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AS58453
AS58453
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AS9002
AS9002
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AS35280
AS35280
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AS4230
AS4230
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AS37468
AS37468
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AS60068
AS60068
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AS137409
AS137409
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AS7195
AS7195
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AS18678
AS18678
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AS20205
AS20205
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AS33891
AS33891
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AS49544
AS49544
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AS1031
AS1031
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AS1828
AS1828
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AS6057
AS6057
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AS45489
AS45489
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AS6424
AS6424
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AS7575
AS7575
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AS13786
AS13786
—
AS17639
AS17639
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AS18106
AS18106
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AS19151
AS19151
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AS20080
AS20080
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AS21700
AS21700
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AS24482
AS24482
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AS32621
AS32621
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AS34927
AS34927
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AS36236
AS36236
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AS41327
AS41327
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AS51185
AS51185
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AS52320
AS52320
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AS61573
AS61573
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AS64126
AS64126
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AS199524
AS199524
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AS263152
AS263152
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AS263237
AS263237
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 100.128.0.0/9 | AS21928 | — |
| 104.152.20.0/24 | AS21928 | — |
| 162.160.0.0/11 | AS21928 | — |
| 162.173.104.0/21 | AS21928 | — |
| 162.173.20.0/24 | AS21928 | — |
| 162.173.24.0/21 | AS21928 | — |
| 162.173.32.0/21 | AS21928 | — |
| 162.173.40.0/21 | AS21928 | — |
| 162.173.48.0/21 | AS21928 | — |
| 162.184.0.0/15 | AS21928 | — |
| 162.186.0.0/17 | AS21928 | — |
| 162.186.128.0/17 | AS21928 | — |
| 162.187.0.0/17 | AS21928 | — |
| 162.187.128.0/17 | AS21928 | — |
| 162.190.0.0/16 | AS21928 | — |
| 162.191.0.0/16 | AS21928 | — |
| 167.20.0.0/16 | AS21928 | — |
| 168.73.0.0/17 | AS21928 | — |
| 168.73.128.0/17 | AS21928 | — |
| 170.206.0.0/17 | AS21928 | — |
| 170.206.128.0/17 | AS21928 | — |
| 172.32.0.0/11 | AS21928 | — |
| 172.56.0.0/16 | AS21928 | — |
| 172.56.0.0/23 | AS21928 | — |
| 172.56.10.0/23 | AS21928 | — |
| 172.56.100.0/23 | AS21928 | — |
| 172.56.102.0/23 | AS21928 | — |
| 172.56.104.0/21 | AS21928 | — |
| 172.56.104.0/23 | AS21928 | — |
| 172.56.106.0/23 | AS21928 | — |
| 172.56.108.0/23 | AS21928 | — |
| 172.56.110.0/23 | AS21928 | — |
| 172.56.112.0/21 | AS21928 | — |
| 172.56.112.0/23 | AS21928 | — |
| 172.56.114.0/23 | AS21928 | — |
| 172.56.116.0/23 | AS21928 | — |
| 172.56.118.0/23 | AS21928 | — |
| 172.56.12.0/23 | AS21928 | — |
| 172.56.120.0/21 | AS21928 | — |
| 172.56.120.0/23 | AS21928 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS21928 represent?
AS21928 is an autonomous system number. The current source associates it with T-MOBILE-AS21928 - T-Mobile USA, Inc. and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS21928 page?
They help explain the scale, interconnection depth, and route structure of AS21928. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS21928?
Open a concrete IP page to check how the address maps into AS21928, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
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