Data as of Nov 8, 2026
144.121.112.0/22
1 residential-proxy exit · 30 daysCrown Castle Fiber LLC · space held by Zayo Bandwidth
Residential-proxy exits
Proxy exits
1
0.10% of its addresses · 30 days
Spread
1 of 4
/24s with at least one exit
Providers
1
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
1 observation
Proxy providers listing exits
- AnyIP
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 144.121.64.0/18 since May 2016 | AS46887 | Internet provider | 35 8 always on | Zayo Bandwidth | |
| 144.121.0.0/16 since Nov 2021 | AS46887 | Internet provider | 132 25 always on | Zayo Bandwidth |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 144.121.113.0/24 since Apr 2017 | AS21751 | Business | Zayo Bandwidth |
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 |
|---|---|---|---|---|---|---|
| 144.121.0.0/16 | 65,536 | ZAYO-CCF-144-121-0-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Apr 29, 2016 | abuse@ |
| └ 144.121.112.8/29 | 8 | NET-CCF---144-121-112-8-29 | unknown | — | — | — |
| └ 144.121.112.16/30 | 4 | NET-CCF--144-121-112-16-30 | unknown | — | — | — |
| └ 144.121.112.24/29 | 8 | NET-CCF--144-121-112-24-29 | unknown | — | — | — |
| └ 144.121.112.32/28 | 16 | NET-CCF--144-121-112-32-28 | unknown | — | — | — |
| └ 144.121.112.52/30 | 4 | NET-CCF--144-121-112-52-30 | unknown | — | — | — |
| └ 144.121.112.56/29 | 8 | NET-CCF---144-121-112-56-29 | unknown | — | — | — |
| └ 144.121.112.64/27 | 32 | NET-CCF--144-121-112-64-27 | unknown | — | — | — |
| └ 144.121.112.96/28 | 16 | NET-CCF--144-121-112-96-28 | unknown | — | — | — |
| └ 144.121.112.112/30 | 4 | NET-CCF--144-121-112-112-30 | unknown | — | — | — |
| └ 144.121.112.120/29 | 8 | LTF--144-121-112-120-29 | unknown | — | — | — |
| └ 144.121.112.128/29 | 8 | NET-144-121-112-128-29 | unknown | — | — | — |
| └ 144.121.112.136/30 | 4 | NET-CCF--144-121-112-136-30 | unknown | — | — | — |
| └ 144.121.112.140/30 | 4 | NET-CCF--144-121-112-140-30 | unknown | — | — | — |
| └ 144.121.112.160/29 | 8 | NET-CCF---144-121-112-160-29 | unknown | — | — | — |
| └ 144.121.112.184/29 | 8 | NET-144-121-112-184-29 | unknown | — | — | — |
| └ 144.121.112.192/30 | 4 | NET-CCF--144-121-112-192-30 | unknown | — | — | — |
| └ 144.121.112.196/30 | 4 | NET-CCF--144-121-112-196-30 | unknown | — | — | — |
| └ 144.121.112.200/30 | 4 | NET-CCF--144-121-112-200-30 | unknown | — | — | — |
| └ 144.121.112.204/30 | 4 | NET-CCF--144-121-112-204-30 | unknown | — | — | — |
| └ 144.121.112.216/30 | 4 | NET-CCF--144-121-112-216-30 | unknown | — | — | — |
| └ 144.121.112.220/30 | 4 | NET-CCF--144-121-112-220-30 | unknown | — | — | — |
| └ 144.121.112.224/28 | 16 | NET-SD-50975-144-121-112-224-28 | unknown | — | — | — |
| └ 144.121.112.240/29 | 8 | NET-CCF-LT-210-144-121-112-240-29 | unknown | — | — | — |
| └ 144.121.112.248/29 | 8 | NET-144-121-112-248-29 | unknown | — | — | — |
| └ 144.121.113.0/24 | 256 | NET-144-121-113-0-24 | Owl Creek Asset Management, L.P. (C06449511) · US | Reassigned | Apr 18, 2017 | abuse@ via ZAYO-CCF-144-121-0-0 |
| └ 144.121.114.0/27 | 32 | NET-144-121-114-0-27 | unknown | — | — | — |
| └ 144.121.114.40/29 | 8 | NET-144-121-114-40-29 | unknown | — | — | — |
| └ 144.121.114.48/28 | 16 | NET-144-121-114-48-28 | unknown | — | — | — |
| └ 144.121.114.64/29 | 8 | NET-CCF--144-121-114-64-29 | unknown | — | — | — |
| └ 144.121.114.72/29 | 8 | NET-Z-CCF--144-121-114-72-29 | unknown | — | — | — |
| └ 144.121.114.88/29 | 8 | NET-144-121-114-88-29 | unknown | — | — | — |
| └ 144.121.114.96/28 | 16 | LTF-144-121-114-96-28 | unknown | — | — | — |
| └ 144.121.114.112/29 | 8 | NET-CCF---144-121-114-112-29 | unknown | — | — | — |
| └ 144.121.114.128/29 | 8 | NET-CCF---144-121-114-128-29 | unknown | — | — | — |
| └ 144.121.114.136/29 | 8 | LTF--144-121-114-136-29 | unknown | — | — | — |
| └ 144.121.114.144/30 | 4 | NET-Z-CCF--144-121-114-144-30 | unknown | — | — | — |
| └ 144.121.114.156/30 | 4 | NET-CCF--144-121-114-156-30 | unknown | — | — | — |
| └ 144.121.114.160/28 | 16 | LTF-0-144-121-114-160-28 | unknown | — | — | — |
| └ 144.121.114.192/28 | 16 | NET-144-121-114-192-28 | unknown | — | — | — |
| └ 144.121.114.212/30 | 4 | NET-CCF-LT-210-144-121-114-212-30 | unknown | — | — | — |
| └ 144.121.114.216/29 | 8 | NET-144-121-114-216-29 | unknown | — | — | — |
| └ 144.121.114.232/29 | 8 | NET-CCF---144-121-114-232-29 | unknown | — | — | — |
| └ 144.121.114.240/29 | 8 | NET-144-121-114-240-29 | unknown | — | — | — |
| └ 144.121.114.252/30 | 4 | NET-CCF--144-121-114-252-30 | unknown | — | — | — |
| └ 144.121.115.0/24 | 256 | NET-144-121-115-0-24 | unknown | — | — | — |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
1,024 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 768 | 75% | 2 | |
| Business | 256 | 25% | 1 |
Network & registry
Origin network
AS46887
US
- Name
- Crown Castle Fiber LLC
- Type
- Internet provider
- Registered
- Apr 13, 2009
- Domain
- zayo.com
- Website
- www.crowncastle.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2025
- Current origin since
- Oct 2025 · 1.1 yr
- Origin networks
- 1
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 144.121.115.0/24 | AS396242 | RADB | Tiffany and Company | MAINT-AS27506 | Sep 3, 2025 |
Whois
Registration for this announcement
- Range
- 144.
121. 0. 0/ 16 - Netname
- ZAYO-CCF-144-121-0-0
- Registrant
- Zayo Bandwidth
- Organization
- Zayo Bandwidth (ZAYOB)
- Org address
- 1401 Wynkoop St., Denver, CO, 80202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-144-121-0-0-1
- Parent
- NET-144-0-0-0-0
- Created
- Apr 29, 2016
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 29, 2016
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN