Data as of Nov 7, 2026
131.243.128.0/17
No anonymizer space · no proxy exits in 30 daysLawrence Berkeley National Laboratory
Network & registry
Announced by
Covering announcement 131.243.0.0/16
- Prefix
- 131.243.0.0/16
- Announced by
- AS16 Lawrence Berkeley National Laboratory
- Type
- Business
- RPKI
- No RPKI
- Netname
- LBL-IP-NET2
- Registrant
- Lawrence Berkeley National Laboratory
- RIR
- ARIN
Origin network
AS16
US
- Name
- Lawrence Berkeley National Laboratory
- Type
- Education
- Domain
- lbl.gov
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 131.243.0.0/16
131.243.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
IRR
Route objects on 131.243.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16 | RADB | LBL-IP-NET2 | MAINT-ESNET | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 131.
243. 0. 0/ 16 - Netname
- LBL-IP-NET2
- Registrant
- Lawrence Berkeley National Laboratory
- Organization
- Lawrence Berkeley National Laboratory (LBNL-Z)
- Org address
- One Cyclotron Road, Berkeley, CA, 94720
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-131-243-0-0-1
- Parent
- NET-131-0-0-0-0
- Created
- Feb 8, 1989
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 8, 1989
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN