Data as of Nov 10, 2026
163.128.73.0/24
Anonymizer · ISP proxyNTT America, Inc. · space held by Alpha Co Inc
IPv4 market
Path
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 163.128.73.0/24 | /24s |
|---|---|---|
| IPXO | 256100% | 1 |
Leased from
Owners leasing their own space
| Name | In 163.128.73.0/24 | /24s |
|---|---|---|
| Alpha Co Inc | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
163.128.73.0/24
From the registry to its use
- Apr 25, 2026– Nov 9, 2026
- May 1, 2026Route objectIPXORADB route object for AS2914 NTT America, Inc., maintainer MAINT-AS834
- todayRegistry recordAlpha Co IncALLOCATED PORTABLE163.128.72.0/23
- todayReallocatedIP allocation for cloud and network infrastructure platformALLOCATED NON-PORTABLE163.128.73.0/24
- todayLeased fromIPXOIP broker
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 163.128.72.0/23 | 512 | ALPHA-AS-AP | Alpha Co Inc (ORG-ACI4-AP) · JP | ALLOCATED PORTABLE | — | ipxo@ |
| └ 163.128.73.0/24 | 256 | ALPHA-IPXO-NET | IP allocation for cloud and network infrastructure platform | ALLOCATED NON-PORTABLE | — | report@ |
Network & registry
IPv4 market
Holder
- Organization
- Alpha Co Inc
- Handle
- ORG-ACI4-AP
- Range
- 163.
128. 72. 0/ 23 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- IP allocation for cloud and network infrastructure platform
- Reallocated range
- 163.
128. 73. 0/ 24 - Reallocation type
- ALLOCATED NON-PORTABLE
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 this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2026
- Current origin since
- Apr 2026 · 7 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 163.
128. 73. 0/ 24 - Netname
- ALPHA-IPXO-NET
- Registrant
- IP allocation for cloud and network infrastructure platform
- Registrant country
- JP
- Organization
- IP allocation for cloud and network infrastructure platform
- Org country
- JP
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 18, 2026
- Maintainer
- MAINT-NETUTILS-AP
- RIR
- APNIC
- Country
- JP
- Delegated
- Mar 17, 2026
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Network Utilities
- Handle
- NU14-AP