Data as of Nov 13, 2026
146.112.72.0/23
No anonymizer space · no proxy exits in 30 daysCisco OpenDNS, LLC · space held by Cisco Systems, Inc.
Operators, sellers and brokers
Corporate gateways
| Name | Parent | In 146.112.72.0/23 | /24s |
|---|---|---|---|
| Cisco Umbrella | Cisco | 512100% | 2 |
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Operator | Holder | RPKI |
|---|---|---|---|---|---|
| 146.112.72.0/24 since Apr 2019 | AS36692 | Corporate gateway | Corporate gatewaysoperated by Cisco Umbrella | Cisco Systems, Inc. | |
| 146.112.73.0/24 since Nov 2022 | AS36692 | Corporate gateway | Corporate gatewaysoperated by Cisco Umbrella | Cisco Systems, Inc. |
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 |
|---|---|---|---|---|---|---|
| 146.112.0.0/16 | 65,536 | OpenDNS-RIPE | Cisco Systems, Inc. (ORG-CSI15-RIPE) · US | LEGACY | — | rir-abuse@ |
| └ 146.112.72.0/24 | 256 | CIE-CDFW-DFW1 | unknown | LEGACY | Apr 8, 2019 | rir-abuse@ |
| └ 146.112.73.0/24 | 256 | CIE-CDFW-DEN1 | unknown | LEGACY | Apr 8, 2019 | rir-abuse@ |
Network & registry
Registry
Holder
- Organization
- Cisco Systems, Inc.
- Handle
- ORG-CSI15-RIPE
- Range
- 146.
112. 0. 0/ 16 - Registration type
- LEGACY
- Legacy
- yes
Origin network
AS36692
US
- Name
- Cisco OpenDNS, LLC
- Type
- Business
- Registered
- Mar 21, 2006
- Domain
- opendns.com
- Website
- www.opendns.com/
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2019
- Current origin since
- Nov 2022 · 4.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 146.112.72.0/23 | AS36692 | /23 | RIPE | RPKI valid |
| 146.112.72.0/22 | AS36692 | /22 | RIPE | Too specific |
| 146.112.72.0/21 | AS36692 | /21 | RIPE | Too specific |
| 146.112.64.0/20 | AS36692 | /20 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS36692 | RADB | Cisco | MAINT-AS36692 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 146.
112. 0. 0/ 16 - Netname
- OpenDNS-RIPE
- Registrant
- Cisco OpenDNS LLC
- Registrant country
- US
- Organization
- Not stated by the registry
- Type
- LEGACY
- Created
- Not stated by the registry
- Updated
- Sep 9, 2022
- Maintainer
- OPENDNS-MNT
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Feb 5, 1991
- Status
- assigned
Report abuse
Abuse contact
- rir-abuse@
cisco. com - Name
- Abuse-C Role
- Handle
- AR80285-RIPE