Data as of Nov 7, 2026
137.164.80.0/21
No anonymizer space · no proxy exits in 30 daysCENIC
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
88% of it
Recent change
New origin Sep 18, 2026
from AS2152 CENIC, after 9.9 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 137.164.0.0/16 since May 2005 | AS2152 | Business | 20 | CENIC |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 137.164.80.0/24 | AS2152 | Business | CENIC | |
| 137.164.84.0/24 since Sep 18, 2026 | AS2152 | Business | CENIC | |
| 137.164.87.0/24 since Jul 2024 | AS16509 | Hosting | CENIC |
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 |
|---|---|---|---|---|---|---|
| 137.164.0.0/16 | 65,536 | CALREN | CENIC (CENIC) · US | Direct Allocation | Dec 21, 1989 | abuse@ |
| └ 137.164.87.0/24 | 256 | CENIC-BYOIP-AWS-V4-2 | CENIC (CENIC) · US | Reassigned | Jul 24, 2024 | abuse@ |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 1,792 | 88% | 4 | |
| Hosting | 256 | 13% | 1 |
Network & registry
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2011
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 137.
164. 0. 0/ 16 - Netname
- CALREN
- Registrant
- CENIC
- Organization
- CENIC (CENIC)
- Org address
- 5757 Plaza Drive, Suite 205, Cypress, CA, 90630-5029
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-137-164-0-0-1
- Parent
- NET-137-0-0-0-0
- Created
- Dec 21, 1989
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 21, 1989
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cenic. org - Name
- CENIC Abuse
- Phone
- +1-714-220-3494
- Handle
- ABUSE711-ARIN