Data as of Nov 11, 2026
172.98.16.0/23
No anonymizer space · no proxy exits in 30 daysCisco 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 |
|---|---|---|---|---|---|---|
| 172.98.16.0/22 | 1,024 | OORTIO-IPV4-01 | Cisco Systems, Inc. (CS-2831) · US | Direct Allocation | Jul 8, 2021 | csirt-notify@ |
| └ 172.98.16.0/23 | 512 | CISCO-TTNA | Cisco Systems, Inc. (CS-2831) · US | Reassigned | Apr 19, 2024 | csirt-notify@ |
Network & registry
Registry
Holder
- Organization
- Cisco Systems, Inc.
- Handle
- CS-2831
- Range
- 172.
98. 16. 0/ 22 - Registration type
- Direct Allocation
- Record created
- Jul 8, 2021
Origin network
AS36519
US
- Name
- Cisco Systems, Inc.
- Type
- Business
- Registered
- Sep 9, 2019
- Domain
- cisco.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 2024
- Current origin since
- May 2025 · 1.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 172.
98. 16. 0/ 23 - Netname
- CISCO-TTNA
- Registrant
- Cisco Systems, Inc.
- Organization
- Cisco Systems, Inc. (CS-2831)
- Org address
- 251 LITTLE FALLS DRIVE, WILMINGTON, DE, 19808
- Org country
- US
- Type
- Reassigned
- Handle
- NET-172-98-16-0-2
- Parent
- NET-172-98-16-0-1
- Created
- Apr 19, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 8, 2021
- Status
- assigned
Report abuse
Abuse contact
- csirt-notify@
cisco. com - Name
- Cisco CSIRT
- Phone
- +1-408-527-3227
- Handle
- CISCO6-ARIN