Data as of Nov 11, 2026
151.181.72.0/22
No anonymizer space · no proxy exits in 30 daysCrown Castle Fiber LLC · space held by Zayo Bandwidth
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 151.181.64.0/19 since Dec 2018 | AS46887 | Internet provider | 18 3 always on | Zayo Bandwidth |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 151.181.72.0/24 since Nov 2021 | AS46887 | Internet provider | Zayo Bandwidth | |
| 151.181.73.0/24 since May 2019 | AS46887 | Internet provider | Zayo Bandwidth | |
| 151.181.74.0/23 since May 2019 | AS46887 | Internet provider | 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 |
|---|---|---|---|---|---|---|
| 151. | 16,384 | ZAYO-CCF-151-181-32-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Dec 20, 2013 | abuse@ |
| └ 151.181.72.0/28 | 16 | CITY-OF-PROVIDENCE-RIEMA-2 | unknown | — | — | — |
| └ 151.181.72.16/28 | 16 | NEIGHBORHOOD-HEALTH-PLAN-OF-RI-2 | unknown | — | — | — |
| └ 151.181.73.32/28 | 16 | NET-151-181-73-32-28 | unknown | — | — | — |
| └ 151.181.73.64/26 | 64 | NET-151-181-73-64-26 | unknown | — | — | — |
| └ 151.181.74.96/27 | 32 | NET-151-181-74-96-27 | unknown | — | — | — |
| └ 151.181.75.96/28 | 16 | NET-151-181-75-96-28 | unknown | — | — | — |
| └ 151.181.75.112/28 | 16 | NET-151-181-75-112-28 | unknown | — | — | — |
| └ 151.181.75.176/29 | 8 | NET-151-181-75-176-29 | unknown | — | — | — |
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 | 992 | 97% | 3 | |
| Business | 32 | 3.1% | 2 |
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
- Sep 2015
- Current origin since
- May 2019 · 7.5 yr
- Origin networks
- 2
- Last change of origin
- May 2019
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46887 | RADB | MAINT-AS27506 | Sep 3, 2025 |
Whois
Registration for this announcement
- Range
- 151.
181. 32. 0 - 151. 181. 95. 255 - Netname
- ZAYO-CCF-151-181-32-0
- Registrant
- Zayo Bandwidth
- Organization
- Zayo Bandwidth (ZAYOB)
- Org address
- 1401 Wynkoop St., Denver, CO, 80202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-151-181-32-0-1
- Parent
- NET-151-0-0-0-0
- Created
- Dec 20, 2013
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 20, 2013
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN