Data as of Nov 5, 2026
172.56.52.0/23
No anonymizer space · no proxy exits in 30 daysT-Mobile USA, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Mobile
Risk
10 / 100 · Low
Shared address
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 172.56.0.0/16 since Nov 2013 | AS21928 | Mobile | 51,924 13,773 always on | T-Mobile USA, Inc. | |
| 172.32.0.0/11 since Sep 2016 | AS21928 | Mobile | 118,085 34,421 always on | T-Mobile USA, Inc. |
Network & registry
Origin network
AS21928
US
- Name
- T-Mobile USA, Inc.
- Type
- Internet provider
- Registered
- Jun 12, 2002
- Domain
- t-mobile.com
- Website
- www.t-mobile.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2024
- Current origin since
- Jan 2026 · 10 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 172.56.0.0/16 | AS21928 | /23 | ARIN | RPKI valid |
| 172.32.0.0/11 | AS21928 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS21928 | ARIN | x | MNT-TMOBI | Jun 29, 2023 |
Whois
Registration for this announcement
- Range
- 172.
32. 0. 0/ 11 - Netname
- TMO9
- Registrant
- T-Mobile USA, Inc.
- Organization
- T-Mobile USA, Inc. (TMOBI)
- Org address
- 12920 SE 38th Street, Bellevue, WA, 98006
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-172-32-0-0-1
- Parent
- NET-172-0-0-0-0
- Created
- Sep 18, 2012
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 18, 2012
- Status
- assigned
Report abuse
Abuse contact
- abuse@
t-mobile. com - Name
- abuse
- Phone
- +1-888-662-4662
- Handle
- ABUSE4857-ARIN