Data as of Nov 9, 2026
198.100.21.0/24
No anonymizer space · no proxy exits in 30 daysLevel 3 Parent, LLC · space held by Canon Medical Systems USA, 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 |
|---|---|---|---|---|---|---|
| 198. | 1,536 | NETBLK-CMSU | Canon Medical Systems USA, Inc. (TAMS) · US | Direct Allocation | Mar 19, 1993 | coreadmins@ |
| └ 198.100.21.0/24 | 256 | TAMS-MRWEST | Toshiba America Medical Systems (C00001843) · US | Reassigned | Mar 19, 1993 | coreadmins@ via NETBLK-CMSU |
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
- Canon Medical Systems USA, Inc.
- Handle
- TAMS
- Range
- 198.
100. 16. 0 - 198. 100. 21. 255 - Registration type
- Direct Allocation
- Record created
- Mar 19, 1993
- Legacy
- yes
Origin network
AS10753
US
- Name
- Level 3 Parent, LLC
- Type
- Internet provider
- Registered
- Nov 18, 1997
- Domain
- level3.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2023
- Current origin since
- May 2023 · 3.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 198.
100. 21. 0/ 24 - Netname
- TAMS-MRWEST
- Registrant
- Toshiba America Medical Systems
- Organization
- Toshiba America Medical Systems (C00001843)
- Type
- Reassigned
- Handle
- NET-198-100-21-0-1
- Parent
- NET-198-100-16-0-1
- Created
- Mar 19, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 19, 1993
- Status
- assigned
Report abuse
Abuse contact
- coreadmins@
us. medical. canon - Name
- group, Core -
- Phone
- +1-949-212-0103
- Handle
- COREG3-ARIN