Data as of Nov 12, 2026
161.243.0.0/16
No anonymizer space · no proxy exits in 30 daysCity of Jacksonville, Florida
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 161.243.15.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.16.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.17.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.24.0/24 since Apr 2022 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.30.0/24 since Aug 2023 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.45.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.81.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.92.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.160.0/24 since Dec 2020 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.188.0/24 since Dec 2018 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.189.0/24 since Dec 2018 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.190.0/24 since Dec 2018 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.200.0/24 since Jan 2021 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.231.0/24 since Jun 2013 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.232.0/24 since Jun 2013 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.233.0/24 since Nov 2018 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.234.0/24 since Jun 2013 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.237.0/24 since May 2022 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.253.0/24 since Jan 2023 | AS36548 | Business | City of Jacksonville, Florida | |
| 161.243.255.0/24 since Jun 2013 | AS36548 | Business | City of Jacksonville, Florida |
Network & registry
Origin network
AS36548
US
- Name
- City of Jacksonville, Florida
- Type
- Business
- Registered
- Jan 30, 2006
- Domain
- coj.net
- Industry
- Government and Regulatory Agencies, Administrations, Departments, and Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Jul 2013 · 13 yr
- Origin networks
- 4
- Last change of origin
- Jul 2013
Recorded history
History
- Handoffs
- 3
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 161.243.230.0/24 | AS198949 | RADB | internet2-FLR | MAINT-AS198949 | Nov 13, 2023 |
| 161.243.230.0/24 | AS36548 | ALTDB | Proxy registration to prevent harm from ARIN-NONAUTH shutdown | MAINT-AS7034 | Apr 4, 2022 |
Whois
Registration for this announcement
- Range
- 161.
243. 0. 0/ 16 - Netname
- COJAX
- Registrant
- City of Jacksonville, Florida
- Organization
- City of Jacksonville, Florida (CJF-2)
- Org address
- 214 N Hogan Street, Jacksonville, FL, 32202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-161-243-0-0-1
- Parent
- NET-161-0-0-0-0
- Created
- Mar 30, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 30, 1993
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN