Data as of Nov 5, 2026
172.85.48.0/23
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 |
|---|---|---|---|---|---|
| 172.85.32.0/19 since May 2015 | AS46887 | Internet provider | 4 | Zayo Bandwidth |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 172.85.49.0/24 since Aug 2024 | AS17407 | 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 |
|---|---|---|---|---|---|---|
| 172.85.32.0/19 | 8,192 | ZAYO-CCF-172-85-32-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | May 18, 2015 | abuse@ |
| └ 172.85.48.32/27 | 32 | LTF--172-85-48-32-27 | unknown | — | — | — |
| └ 172.85.48.80/29 | 8 | LTF-0-172-85-48-80-29 | unknown | — | — | — |
| └ 172.85.48.112/29 | 8 | NET-172-85-48-112-29 | unknown | — | — | — |
| └ 172.85.48.128/29 | 8 | NET-172-85-48-128-29 | unknown | — | — | — |
| └ 172.85.48.152/29 | 8 | NET-172-85-48-152-29 | unknown | — | — | — |
| └ 172.85.48.160/28 | 16 | NET-172-85-48-160-28 | unknown | — | — | — |
| └ 172.85.48.176/29 | 8 | NET-172-85-48-176-29 | unknown | — | — | — |
| └ 172.85.48.208/29 | 8 | LTF-172-85-48-208-29 | unknown | — | — | — |
| └ 172.85.48.232/29 | 8 | NET-172-85-48-232-29 | unknown | — | — | — |
| └ 172.85.49.0/24 | 256 | NET-172-85-49-0-24 | Cherry Road Technologies (C05965812) · US | Reassigned | Nov 16, 2015 | abuse@ via ZAYO-CCF-172-85-32-0 |
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
512 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 256 | 50% | 1 | |
| Internet provider | 256 | 50% | 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
- Nov 2021
- Current origin since
- Nov 2021 · 5.0 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46887 | RADB | Crown Castle Fiber LLC | MAINT-AS27506 | May 23, 2025 |
Whois
Registration for this announcement
- Range
- 172.
85. 32. 0/ 19 - Netname
- ZAYO-CCF-172-85-32-0
- Registrant
- Zayo Bandwidth
- Organization
- Zayo Bandwidth (ZAYOB)
- Org address
- 1401 Wynkoop St., Denver, CO, 80202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-172-85-32-0-1
- Parent
- NET-172-0-0-0-0
- Created
- May 18, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- May 18, 2015
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN