Data as of Nov 8, 2026
154.38.24.0/23
No anonymizer space · no proxy exits in 30 daysMiami Dade College · space held by Cogent Communications, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Recent change
New origin Jul 2026
from AS19899 Miami Dade College
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | RPKI |
|---|---|---|---|---|---|
| 154.36.0.0/14 since Sep 2006 | AS174 | Internet provider | IP broker Aventice (part) | 2,135 348 always on |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 154.38.24.0/24 since Jan 2026 | AS19899 | Business | Cogent Communications, LLC | |
| 154.38.25.0/24 since Jan 2026 | AS19899 | Business | Cogent Communications, LLC |
Network & registry
Origin network
AS19899
US
- Name
- Miami Dade College
- Type
- Education
- Registered
- Feb 28, 2001
- Domain
- mdc.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2026
- Current origin since
- Jul 2026 · 4 mo
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS19899 | RADB | Route Registered for Cogent Communications Customer - Miami Dade College | MAINT-AS174 | Jan 15, 2026 |
Whois
Registration for this announcement
- Range
- 154.
38. 0. 0/ 16 - Netname
- COGENT-154-38-16
- Registrant
- Cogent Communications, LLC
- Organization
- Cogent Communications, LLC (COGC)
- Org address
- 2450 N Street NW, Washington, DC, 20037
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-154-38-0-0-1
- Parent
- NET-154-0-0-0-0
- Created
- Feb 5, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 5, 1992
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN