Data as of Nov 10, 2026
75.7.64.0/22
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 |
|---|---|---|---|---|---|
| 75.4.0.0/14 since Dec 2017 | AS7018 | Residential | 1,804 191 always on | AT&T Enterprises, LLC |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 75.7.66.0/23 since Oct 10, 2026 | AS36426 | Internet provider | 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 |
|---|---|---|---|---|---|---|
| 75. | 1,245,184 | SBCIS-SBIS-6BLK | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Feb 28, 2006 | abuse@ |
| └ 75.7.64.0/21 | 2,048 | SBC07500706400021060321122709 | IsoTropic Networks, Inc (C01311385) · US | Reassigned | Mar 21, 2006 | 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 75.7.64.0/21
- Prefix
- 75.7.64.0/21
- 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
- 75.
3. 192. 0 - 75. 22. 191. 255 - Registration type
- Direct Allocation
- Record created
- Feb 28, 2006
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
75.7.64.0/21
Routing history
- Pattern
- Stable
- First seen
- Jun 2011
- Current origin since
- Jun 2011 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 75.7.64.0/21 | AS36426 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 75.
7. 64. 0/ 21 - Netname
- SBC07500706400021060321122709
- Registrant
- IsoTropic Networks, Inc
- Organization
- IsoTropic Networks, Inc (C01311385)
- Type
- Reassigned
- Handle
- NET-75-7-64-0-1
- Parent
- NET-75-3-192-0-1
- Created
- Mar 21, 2006
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 28, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN