Data as of Nov 13, 2026
172.56.136.0/24
No anonymizer space · no proxy exits in 30 daysT-Mobile USA, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 172.32.0.0/11 since Sep 2016 | AS21928 | Mobile | 118,184 35,595 always on | T-Mobile USA, Inc. |
Network & registry
Announced by
Covering announcement 172.56.0.0/16
- Prefix
- 172.56.0.0/16
- Announced by
- AS21928 T-Mobile USA, Inc.
- Type
- Mobile
- Proxy exits
- 51,917
- Always-on exits
- 14,201
- RPKI
- RPKI valid
- Netname
- TMO9
- Registrant
- T-Mobile USA, Inc.
- RIR
- ARIN
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
172.56.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Nov 2013
- Current origin since
- Nov 2013 · 13 yr
- 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 |
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