Data as of Nov 12, 2026
159.63.0.0/24
No anonymizer space · no proxy exits in 30 daysCrown Castle Fiber LLC · space held by Level 3 Parent, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 159.63.0.0/21 since Dec 2018 | AS46887 | Unknown | Level 3 Parent, LLC via Fibertech Networks, LLC | |
| 159.63.0.0/17 since Jun 2010 | AS3549 | Internet provider | Level 3 Parent, LLC |
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 |
|---|---|---|---|---|---|---|
| 159.63.0.0/16 | 65,536 | LVLT-ORG-159-63 | Level 3 Parent, LLC (LPL-141) · US | Direct Allocation | Mar 12, 1992 | abuse@ |
| └ 159.63.0.0/21 | 2,048 | GX-FRO2004368641 | Fibertech Networks, LLC (FNL-4) · US | Reallocated | Aug 2, 2011 | abuse@ |
| └ 159.63.0.128/27 | 32 | LANTEK | unknown | — | — | — |
| └ 159.63.0.160/27 | 32 | ESCI | unknown | — | — | — |
| └ 159.63.0.192/30 | 4 | HJ-HEINZ-II-FAMILY-TRUST | unknown | — | — | — |
| └ 159.63.0.196/30 | 4 | UNITED-LENDING-SERVICES | unknown | — | — | — |
| └ 159.63.0.208/28 | 16 | PROPEL-SCHOOLS | unknown | — | — | — |
| └ 159.63.0.224/27 | 32 | UNITED-LENDING-SERVICES | unknown | — | — | — |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Unknown | 136 | 53% | 2 | |
| Business | 120 | 47% | 6 |
Network & registry
IPv4 market
Holder
- Organization
- Level 3 Parent, LLC
- Handle
- LPL-141
- Range
- 159.
63. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Mar 12, 1992
- Legacy
- yes
- Reallocated to
- Fibertech Networks, LLC (FNL-4)
- Reallocated range
- 159.
63. 0. 0/ 21 - Reallocated
- Aug 2, 2011
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
- Aug 2011
- 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 | Fibertech Networks, LLC | MAINT-AS27506 | May 23, 2025 |
Whois
Registration for this announcement
- Range
- 159.
63. 0. 0/ 21 - Netname
- GX-FRO2004368641
- Registrant
- Fibertech Networks, LLC
- Organization
- Fibertech Networks, LLC (FNL-4)
- Org address
- 1805 29th Street, Suite 2050, Boulder, CO, 80301
- Org country
- US
- Type
- Reallocated
- Handle
- NET-159-63-0-0-2
- Parent
- NET-159-63-0-0-1
- Created
- Aug 2, 2011
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 12, 1992
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN