Data as of Nov 6, 2026
199.20.31.0/24
No anonymizer space · no proxy exits in 30 daysAlabama Supercomputer Authority
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 |
|---|---|---|---|---|---|---|
| 199.20.16.0/20 | 4,096 | NETBLK-ASC-NET | Alabama Supercomputer Authority (ASC-Z) · US | Direct Allocation | Oct 11, 1993 | bgpadmin@ |
| └ 199.20.31.0/24 | 256 | NETBLK-ASC-NET | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 199.20.16.0/20
- Prefix
- 199.20.16.0/20
- Announced by
- AS3464 Alabama Supercomputer Authority
- Type
- Business
- Proxy exits
- 6
- RPKI
- RPKI valid
- Netname
- NETBLK-ASC-NET
- Registrant
- Alabama Supercomputer Authority
- RIR
- ARIN
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
Who has announced 199.20.16.0/20
199.20.16.0/20
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- 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. 16. 0/ 20 - Netname
- NETBLK-ASC-NET
- Registrant
- Alabama Supercomputer Authority
- Organization
- Alabama Supercomputer Authority (ASC-Z)
- Org address
- 686 Discovery Dr., Huntsville, AL, 35806
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-199-20-16-0-1
- Parent
- NET-199-0-0-0-0
- Created
- Oct 11, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 11, 1993
- Status
- assigned
Report abuse
Abuse contact
- bgpadmin@
asc. edu - Name
- R
- Phone
- +1-256-971-7491
- Handle
- MD3-ORG-ARIN