Data as of Nov 14, 2026
199.20.25.0/24
No anonymizer space · no proxy exits in 30 daysAlabama Supercomputer Authority
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Jun 2026
from AS3464 Alabama Supercomputer Authority, after 15.9 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 199.20.16.0/20 since May 2005 | AS3464 | Business | 11 | Alabama Supercomputer Authority |
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 |
|---|---|---|---|---|---|---|
| 199.20.16.0/20 | 4,096 | NETBLK-ASC-NET | Alabama Supercomputer Authority (ASC-Z) · US | Direct Allocation | Oct 11, 1993 | bgpadmin@ |
| └ 199.20.25.0/24 | 256 | NETBLK-ASC-NET | Samford University (C02364276) · US | Reassigned | Nov 23, 2009 | bgpadmin@ via NETBLK-ASC-NET |
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
Registry
Holder
- Organization
- Alabama Supercomputer Authority
- Handle
- ASC-Z
- Range
- 199.
20. 16. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Oct 11, 1993
- Legacy
- yes
Origin network
AS3464
US
- Name
- Alabama Supercomputer Authority
- Type
- Education
- Registered
- Mar 4, 1994
- Domain
- asc.edu
- Website
- www.asc.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
- Feb 2009
- Current origin since
- Jun 2026 · 5 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 199.20.16.0/20 | AS3464 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 199.
20. 25. 0/ 24 - Netname
- NETBLK-ASC-NET
- Registrant
- Samford University
- Organization
- Samford University (C02364276)
- Type
- Reassigned
- Handle
- NET-199-20-25-0-1
- Parent
- NET-199-20-16-0-1
- Created
- Nov 23, 2009
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 11, 1993
- Status
- assigned
Report abuse
Abuse contact
- swipadmin@
asc. edu - Name
- R
- Phone
- +1-256-971-7448
- Handle
- MD3-ORG-ARIN