Data as of Nov 7, 2026
185.254.243.0/24
Anonymizer · ISP proxyNTT America, Inc. · reallocated from OSOA Co.,LTD.
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Aug 2026
from AS40605 Anyconnect Information Technology Co., Ltd
IPv4 market
Path
Announced by AS2914 since Aug 2026 · 13 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 185.254.243.0/24 | /24s |
|---|---|---|
| OSOA Co.,LTD. | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
185.254.243.0/24
From the registry to its use
- Apr 19, 2018– Jun 5, 2018
- Jul 12, 2018– Aug 23, 2019Announced
- Aug 12, 2019– Dec 17, 2022Announced
- Apr 18, 2025– Aug 22, 2026
- Aug 11, 2026– today
- todayRegistry recordOSOA Co.,LTD.ALLOCATED PORTABLE185.254.240.0/22
- todayReallocatedNTT America, Inc.ALLOCATED NON-PORTABLE185.254.243.0/24
- todayRoute objectAS2914 NTT America, Inc.APNIC route object for AS2914 NTT America, Inc., maintainer MAINT-DFGROUP-JP
- todayRoute objectAS40605 Anyconnect Information Technology Co., LtdAPNIC route object for AS40605 Anyconnect Information Technology Co., Ltd, maintainer MAINT-DFGROUP-JP
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 |
|---|---|---|---|---|---|---|
| 185.254.240.0/22 | 1,024 | OSOA-JP | OSOA Co.,LTD. (ORG-OC2-AP) · JP | ALLOCATED PORTABLE | — | noc@ |
| └ 185.254.243.0/24 | 256 | AIComputing | NTT America, Inc. | ALLOCATED NON-PORTABLE | — | abuse@ |
Network & registry
IPv4 market
Holder
- Organization
- OSOA Co.,LTD.
- Handle
- ORG-OC2-AP
- Range
- 185.
254. 240. 0/ 22 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- NTT America, Inc.
- Reallocated range
- 185.
254. 243. 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
- Rotating
- First seen
- Apr 2018
- Current origin since
- Aug 2026 · 3 mo
- Origin networks
- 5
- Last change of origin
- Aug 2026
Recorded history
History
- Handoffs
- 4
- Also announced by
- 40605
RPKI
Route origin authorizations
Whois
Registration for this announcement
- Range
- 185.
254. 243. 0/ 24 - Netname
- AIComputing
- Registrant
- NTT America, Inc.
- Registrant country
- JP
- Organization
- NTT America, Inc.
- Org country
- JP
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Aug 13, 2026
- Maintainer
- MAINT-DFGROUP-JP
- RIR
- APNIC
- Country
- JP
- Delegated
- Apr 11, 2018
- Status
- assigned
Report abuse
Abuse contact
- abuse@
unrivalednet. com - Name
- ABUSE DFGROUPJP
- Handle
- AD1155-AP