Data as of Nov 11, 2026
99.185.148.0/22
No anonymizer space · no proxy exits in 30 daysIsoTropic Networks, Inc. · space held by AT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 99.184.0.0/13 since Dec 2017 | AS7018 | Residential | 4,648 368 always on | AT&T Enterprises, LLC |
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 |
|---|---|---|---|---|---|---|
| 99. | 688,128 | SBCIS-SBIS-6BLK | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Aug 29, 2007 | abuse@ |
| └ 99.185.144.0/21 | 2,048 | SBC07500706400021060321122709 | IsoTropic Networks, Inc (C02883463) · US | Reassigned | Oct 26, 2011 | abuse@ via SBCIS-SBIS-6BLK |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 99.185.144.0/21
- Prefix
- 99.185.144.0/21
- Announced by
- AS36426 IsoTropic Networks, Inc.
- Type
- Internet provider
- RPKI
- RPKI valid
- Netname
- SBC07500706400021060321122709
- Registrant
- IsoTropic Networks, Inc
- RIR
- ARIN
IPv4 market
Holder
- Organization
- AT&T Enterprises, LLC
- Handle
- AEL-360
- Range
- 99.
181. 128. 0 - 99. 191. 255. 255 - Registration type
- Direct Allocation
- Record created
- Aug 29, 2007
Origin network
AS36426
US
- Name
- IsoTropic Networks, Inc.
- Type
- Internet provider
- Registered
- May 13, 2010
- Domain
- isosat.net
- Industry
- Satellite Communication
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
99.185.144.0/21
Routing history
- Pattern
- Stable
- First seen
- Jun 2011
- Current origin since
- May 2018 · 8.5 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 99.185.144.0/21 | AS36426 | /24 | ARIN | RPKI valid |
| 99.184.0.0/13 | AS7018 | /13 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 99.
185. 144. 0/ 21 - Netname
- SBC07500706400021060321122709
- Registrant
- IsoTropic Networks, Inc
- Organization
- IsoTropic Networks, Inc (C02883463)
- Type
- Reassigned
- Handle
- NET-99-185-144-0-1
- Parent
- NET-99-181-128-0-1
- Created
- Oct 26, 2011
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 29, 2007
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN