Data as of Nov 9, 2026
104.247.51.0/24
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 |
|---|---|---|---|---|---|
| 104.247.50.0/23 since Nov 2021 | AS46887 | Internet provider | Zayo Bandwidth | ||
| 104.247.32.0/19 since Apr 2015 | AS46887 | Internet provider | 1 | 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 |
|---|---|---|---|---|---|---|
| 104.247.32.0/19 | 8,192 | ZAYO-CCF-104-247-32-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Dec 24, 2014 | abuse@ |
| └ 104.247.51.0/24 | 256 | NET-104-247-51-0-24 | Mamaroneck School District (C05693956) · US | Reassigned | Apr 23, 2015 | abuse@ via ZAYO-CCF-104-247-32-0 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Registry
Holder
- Organization
- Zayo Bandwidth
- Handle
- ZAYOB
- Range
- 104.
247. 32. 0/ 19 - Registration type
- Direct Allocation
- Record created
- Dec 24, 2014
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
- May 2015
- Current origin since
- May 2015 · 12 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46887 | RADB | Crown Castle Fiber LLC | MAINT-AS27506 | Sep 2, 2025 |
Whois
Registration for this announcement
- Range
- 104.
247. 51. 0/ 24 - Netname
- NET-104-247-51-0-24
- Registrant
- Mamaroneck School District
- Organization
- Mamaroneck School District (C05693956)
- Type
- Reassigned
- Handle
- NET-104-247-51-0-1
- Parent
- NET-104-247-32-0-1
- Created
- Apr 23, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 24, 2014
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN