Data as of Nov 5, 2026
128.121.0.0/19
1,024 anonymizer addresses · 13% · ISP proxyNTT America, Inc.
IPv4 market
Path
4 · Use
Internet provider
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 128.121.0.0/19 | /24s |
|---|---|---|
| Rackdog | 1,02413% | 4 |
Leased from
Owners leasing their own space
| Name | In 128.121.0.0/19 | /24s |
|---|---|---|
| NTT America, Inc. | 1,02413% | 4 |
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 128.121.0.0/22 since Oct 10, 2026 | AS42689 | ISP proxy | NTT America, Inc. | |
| 128.121.15.0/24 since Jul 2024 | AS204670 | Business | NTT America, Inc. | |
| 128.121.16.0/24 since Jan 2026 | AS148996 | Unknown | NTT America, Inc. | |
| 128.121.17.0/24 since Jan 2026 | AS148996 | Unknown | NTT America, Inc. | |
| 128.121.28.0/24 since Jan 2026 | AS148996 | Unknown | NTT America, Inc. | |
| 128.121.29.0/24 since Jan 2026 | AS148996 | Unknown | NTT America, Inc. |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 128.121.0.0/16 | 65,536 | NTTA-128-121 | NTT America, Inc. (NTTAM-1) · US | Direct Allocation | Jul 11, 2000 | abuse@ |
| └ 128.121.0.0/22 | 1,024 | RCN-128-121-000 | unknown | Reassigned | Oct 8, 2026 | abuse@ via NTTA-128-121 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
8,192 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 5,888 | 72% | 3 | |
| ISP proxyanonymizer | 1,024 | 13% | 1 | |
| Unknown | 1,024 | 13% | 4 | |
| Business | 256 | 3.1% | 1 |
Network & registry
Announced by
Covering announcement 128.121.0.0/16
- Prefix
- 128.121.0.0/16
- Announced by
- AS2914 NTT America, Inc.
- Type
- Internet provider
- Anonymizer addresses
- none
- Proxy exits
- 4
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- NTTA-128-121
- Registrant
- NTT America, Inc.
- RIR
- ARIN
Origin network
AS2914
US
- Name
- NTT America, Inc.
- Type
- Internet provider
- Registered
- Dec 7, 1998
- Domain
- ntt.net
- Website
- www.gin.ntt.net/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 128.121.0.0/16
128.121.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 128.121.0.0/16 | AS2914 | /16 | ARIN | RPKI valid |
IRR
Route objects on 128.121.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2914 | NTTCOM | NTT NTTA-128-121 | MAINT-NTTCOM-BB | May 9, 2025 |
Whois
Registration for this announcement
- Range
- 128.
121. 0. 0/ 16 - Netname
- NTTA-128-121
- Registrant
- NTT America, Inc.
- Organization
- NTT America, Inc. (NTTAM-1)
- Org address
- 15809 Bear Creek Pkwy, Redmond, WA, 98052
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-128-121-0-0-1
- Parent
- NET-128-0-0-0-0
- Created
- Jul 11, 2000
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 11, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ntt. net - Name
- NTT America Abuse Contact
- Phone
- +1-877-688-6625
- Handle
- NAAC-ARIN