Data as of Nov 13, 2026
97.107.72.0/24
No anonymizer space · no proxy exits in 30 daysBRETSA · space held by Zayo Bandwidth
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 97.107.64.0/20 since Apr 2011 | AS13555 | 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 |
|---|---|---|---|---|---|---|
| 97.107.64.0/20 | 4,096 | EAGLE-NET | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Dec 8, 2008 | abuse@ |
| └ 97.107.72.0/23 | 512 | BRETSA | BRETSA (C02221285) · US | Reassigned | May 6, 2009 | abuse@ via EAGLE-NET |
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
- 97.
107. 64. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Dec 8, 2008
Origin network
AS36513
US
- Name
- BRETSA
- Type
- Business
- Registered
- Apr 7, 2011
- Domain
- bretsaps.org
- Industry
- Government and Regulatory Agencies, Administrations, Departments, and Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Dec 2009
- Current origin since
- Nov 2011 · 15 yr
- Origin networks
- 2
- Last change of origin
- Nov 2011
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 97.107.72.0/24 | AS36513 | /24 | ARIN | RPKI valid |
| 97.107.64.0/20 | AS13555 | /20 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS36513 | RADB | Boulder County, Colorado | MAINT-AS14041 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 97.
107. 72. 0/ 23 - Netname
- BRETSA
- Registrant
- BRETSA
- Organization
- BRETSA (C02221285)
- Type
- Reassigned
- Handle
- NET-97-107-72-0-1
- Parent
- NET-97-107-64-0-1
- Created
- May 6, 2009
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 8, 2008
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN