Data as of Nov 3, 2026
75.54.37.0/24
No anonymizer space · no proxy exits in 30 daysAlamo Community College District · space held by AT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 75.48.0.0/12 since Oct 2013 | AS7018 | Residential | 3,613 634 always on | AT&T Enterprises, LLC |
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 |
|---|---|---|---|---|---|---|
| 75.47.192.0 - 75.63.255.255 | 1,064,960 | SBCIS-SBIS-6BLK | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Feb 28, 2006 | [email protected] |
| └ 75.54.32.0/21 | 2,048 | SBC07505403200021061114143341 | Alamo Community College District (ACCD) 1150320 (C01495487) · US | Reassigned | Nov 14, 2006 | [email protected] 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
IPv4 market
Holder
- Organization
- AT&T Enterprises, LLC
- Handle
- AEL-360
- Range
- 75.47.192.0 - 75.63.255.255
- Registration type
- Direct Allocation
- Record created
- Feb 28, 2006
Origin network
AS394720
US
- Name
- Alamo Community College District
- Type
- Education
- Registered
- Jun 25, 2025
- Domain
- alamo.edu
- Industry
- Hospitals and Medical Centers
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jan 2010
- Current origin since
- Jul 2025 · 1.3 yr
- Origin networks
- 2
- Last change of origin
- Jul 2025
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS394720 | RADB | Alamo College | MAINT-AS15164 | Jan 6, 2026 |
Whois
Registration for this announcement
- Range
- 75.54.32.0/21
- Netname
- SBC07505403200021061114143341
- Registrant
- Alamo Community College District (ACCD) 1150320
- Organization
- Alamo Community College District (ACCD) 1150320 (C01495487)
- Type
- Reassigned
- Handle
- NET-75-54-32-0-1
- Parent
- NET-75-47-192-0-1
- Created
- Nov 14, 2006
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 28, 2006
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN