Data as of Nov 10, 2026
166.181.78.0/24
No anonymizer space · no proxy exits in 30 daysT-Mobile USA, Inc.
Network & registry
Announced by
Covering announcement 166.181.0.0/16
- Prefix
- 166.181.0.0/16
- Announced by
- AS6614 T-Mobile USA, Inc.
- Type
- Mobile
- RPKI
- No RPKI
- Netname
- USL-63
- Registrant
- T-Mobile USA, Inc.
- RIR
- ARIN
Origin network
AS6614
US
- Name
- T-Mobile USA, Inc.
- Type
- Internet provider
- Registered
- Jun 5, 1995
- Domain
- t-mobile.com
- Website
- www.uscellular.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 166.181.0.0/16
166.181.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Nov 2006
- Current origin since
- Nov 2006 · 20 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 166.
181. 0. 0 - 166. 182. 255. 255 - Netname
- USL-63
- 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-166-181-0-0-1
- Parent
- NET-166-0-0-0-0
- Created
- Apr 7, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 7, 2025
- Status
- assigned
Report abuse
Abuse contact
- abuse@
t-mobile. com - Name
- abuse
- Phone
- +1-888-662-4662
- Handle
- ABUSE4857-ARIN