Data as of Nov 3, 2026
199.123.78.0/24
No anonymizer space · no proxy exits in 30 daysHeadquarters, USAISC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 199.123.72.0/21 since Dec 2010 | AS721 | Business |
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 |
|---|---|---|---|---|---|---|
| 199.123.78.0/24 | 256 | RECNET1 | unknown | — | — | — |
| └ 199.123.78.0/24 | 256 | RECNET1 | Headquarters, USAISC (HEADQU-3) · US | Allocation | Aug 25, 2025 | [email protected] |
Network & registry
Announced by
Covering announcement 199.123.78.0/23
- Prefix
- 199.123.78.0/23
- Announced by
- AS1540 Headquarters, USAISC
- Type
- Business
- RPKI
- No RPKI
- RIR
- ARIN
Registry
Holder
- Organization
- Not stated by the registry
Origin network
AS1540
US
- Name
- Headquarters, USAISC
- Type
- Business
- Registered
- May 12, 2004
- Domain
- mail.mil
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
199.123.78.0/23
Routing history
- Pattern
- Rotating
- First seen
- Mar 2022
- Current origin since
- Jan 2026 · 9 mo
- Origin networks
- 3
- Last change of origin
- Jan 2026
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
199.123.78.0/23 spans several registrations: 4 records are listed under Registrations.
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 5, 1994
- Status
- assigned