Data as of Nov 10, 2026
72.22.167.0/24
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 |
|---|---|---|---|---|---|
| 72.22.160.0/19 since Aug 2009 | 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 |
|---|---|---|---|---|---|---|
| 72.22.160.0/19 | 8,192 | ZAYO-CCF-72-22-160-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Jan 21, 2005 | abuse@ |
| └ 72.22.167.0/24 | 256 | HVDN-AMBAC-1 | Ambac Assurance Corp (AAC-48) · US | Reallocated | Dec 29, 2005 | hostmaster@ |
Network & registry
Registry
Holder
- Organization
- Zayo Bandwidth
- Handle
- ZAYOB
- Range
- 72.
22. 160. 0/ 19 - Registration type
- Direct Allocation
- Record created
- Jan 21, 2005
- Reallocated to
- Ambac Assurance Corp (AAC-48)
- Reallocated range
- 72.
22. 167. 0/ 24 - Reallocated
- Dec 29, 2005
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
- Rotating
- First seen
- Jan 2006
- Current origin since
- Jan 2024 · 2.8 yr
- Origin networks
- 2
- Last change of origin
- Jan 2024
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
- 72.
22. 167. 0/ 24 - Netname
- HVDN-AMBAC-1
- Registrant
- Ambac Assurance Corp
- Organization
- Ambac Assurance Corp (AAC-48)
- Org address
- One State Street Plaza, New York, NY, 10004
- Org country
- US
- Type
- Reallocated
- Handle
- NET-72-22-167-0-1
- Parent
- NET-72-22-160-0-1
- Created
- Dec 29, 2005
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 21, 2005
- Status
- assigned
Report abuse
Abuse contact
- hostmaster@
ambac. com - Name
- hostmaster
- Phone
- +1-212-208-3188
- Handle
- HOSTM2063-ARIN