Data as of Nov 10, 2026
172.85.45.72/29
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 |
Registrations in this block
The registry's network records over this block, widest first, each 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@ |
| └ 172.85.45.72/29 | 8 | NET-172-85-45-72-29 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 172.85.44.0/23
- Prefix
- 172.85.44.0/23
- Announced by
- AS46887 Crown Castle Fiber LLC
- Type
- Internet provider
- RPKI
- No RPKI
- Netname
- ZAYO-CCF-172-85-32-0
- Registrant
- Zayo Bandwidth
- RIR
- ARIN
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
172.85.44.0/23
Routing history
- Pattern
- Stable
- First seen
- Nov 2021
- Current origin since
- Nov 2021 · 5.0 yr
- Origin networks
- 1
IRR
Route objects on 172.85.44.0/23
| 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