Data as of Nov 10, 2026
209.186.78.0/24
Anonymizer · Datacenter proxyLS4KDC Limited · space held by AT&T Enterprises, LLC
Announcement
this exact prefix
RPKI invalid (origin)
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
IPv4 market
Path
4 · Use
Datacenter proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 209.186.78.0/24 | /24s |
|---|---|---|
| AT&T Enterprises, LLC | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
209.186.78.0/24
From the registry to its use
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 209.186.0.0/15 since May 2005 | AS7018 | Residential | AT&T Enterprises, LLC |
Network & registry
Origin network
AS214760
HK
- Name
- LS4KDC Limited
- Type
- Hosting
- Registered
- Jun 5, 2024
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2025
- Current origin since
- Aug 2025 · 1.2 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 209.186.72.0/21 | AS7018 | /24 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 209.
186. 0. 0/ 15 - Netname
- CERFNET-BLK-3
- Registrant
- AT&T Enterprises, LLC
- Organization
- AT&T Enterprises, LLC (AEL-360)
- Org address
- 208 S. Akard St., Dallas, TX, 75202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-209-186-0-0-1
- Parent
- NET-209-0-0-0-0
- Created
- Dec 11, 1997
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 11, 1997
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN