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CIDR Range

208.54.4.0/22

1.0K IPs /22 T-Mobile USA, Inc. AS21928 United States ARIN
Addresses
1,024
1.0K
IP Range
208.54.4.0
→ 208.54.7.255
Sub-ranges
50+
within this block
PTR Density
0.8%
8 of 1.0K IPs have PTR

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

78/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 208.54.4.0/22

CIDRIPsOrganizationASNCountry
208.54.6.0/23 512 T-Mobile USA, Inc. AS21928 US
208.54.4.128/25 128 T-Mobile USA, Inc. AS21928 US
208.54.4.0/26 64 T-Mobile USA, Inc. AS21928 US
208.54.5.0/26 64 T-Mobile USA, Inc. AS21928 US
208.54.5.128/26 64 T-Mobile USA, Inc. AS21928 US
208.54.4.64/27 32 T-Mobile USA, Inc. AS21928 US
208.54.5.192/27 32 T-Mobile USA, Inc. AS21928 US
208.54.5.64/28 16 T-Mobile USA, Inc. AS21928 US
208.54.5.224/28 16 T-Mobile USA, Inc. AS21928 US
208.54.4.96/29 8 T-Mobile USA, Inc. AS21928 US
208.54.5.80/29 8 T-Mobile USA, Inc. AS21928 US
208.54.5.96/29 8 T-Mobile USA, Inc. AS21928 US
208.54.4.124/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.88/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.92/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.244/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.252/30 4 T-Mobile USA, Inc. AS21928 US
208.54.4.108/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.124/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.108/30 4 T-Mobile USA, Inc. AS21928 US
208.54.5.118/31 2 T-Mobile USA, Inc. AS21928 US
208.54.5.122/31 2 T-Mobile USA, Inc. AS21928 US
208.54.4.122/31 2 T-Mobile USA, Inc. AS21928 US
208.54.4.118/31 2 T-Mobile USA, Inc. AS21928 US
208.54.5.242/31 2 T-Mobile USA, Inc. AS21928 US
208.54.5.250/31 2 T-Mobile USA, Inc. AS21928 US
208.54.5.117/32 1 T-Mobile USA, Inc. AS21928 US
208.54.5.120/32 1 T-Mobile USA, Inc. AS21928 US
208.54.5.121/32 1 T-Mobile USA, Inc. AS21928 US
208.54.5.249/32 1 T-Mobile USA, Inc. AS21928 US
208.54.5.248/32 1 T-Mobile USA, Inc. AS21928 US
208.54.4.107/32 1 T-Mobile USA, Inc. AS21928 US

First and last addresses in 208.54.4.0/22

208.54.4.0/22 runs from 208.54.4.0 to 208.54.7.255.

First 16
208.54.4.0 208.54.4.1 208.54.4.2 208.54.4.3 208.54.4.4 208.54.4.5 208.54.4.6 208.54.4.7 208.54.4.8 208.54.4.9 208.54.4.10 208.54.4.11 208.54.4.12 208.54.4.13 208.54.4.14 208.54.4.15
Last 16
208.54.7.240 208.54.7.241 208.54.7.242 208.54.7.243 208.54.7.244 208.54.7.245 208.54.7.246 208.54.7.247 208.54.7.248 208.54.7.249 208.54.7.250 208.54.7.251 208.54.7.252 208.54.7.253 208.54.7.254 208.54.7.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 208.54.0.0/17.

Announced prefix
208.54.0.0/17
Origin AS
AS21928
Announcement samples
24,477
Last seen
2026-11-13 09:19:36

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 208.54.4.0/22?

208.54.4.0/22 is a CIDR network block containing 1,024 IPv4 addresses (from 208.54.4.0 to 208.54.7.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 208.54.4.0/22 network?

The 208.54.4.0/22 range is allocated to T-Mobile USA, Inc. and announced via AS21928 from United States.

Last updated: 2026-11-13 09:24:05 UTC
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