Data as of Nov 7, 2026
209.242.91.0/24
No anonymizer space · no proxy exits in 30 daysThe Nielsen Company (US), LLC · space held by CyrusOne LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 209.242.64.0/18 since Dec 2016 | AS62 | Hosting | CyrusOne LLC |
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 |
|---|---|---|---|---|---|---|
| 209.242.64.0/18 | 16,384 | GRAMTEL003 | CyrusOne LLC (CL-260) · US | Direct Allocation | Feb 23, 2000 | abuse@ |
| └ 209.242.88.0/22 | 1,024 | CYRUSONE--C0000542-209-242-88-0-22 | The Nielsen Company (C07535419) · US | Reassigned | Apr 9, 2020 | abuse@ via GRAMTEL003 |
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
- CyrusOne LLC
- Handle
- CL-260
- Range
- 209.
242. 64. 0/ 18 - Registration type
- Direct Allocation
- Record created
- Feb 23, 2000
Origin network
AS19606
US
- Name
- The Nielsen Company (US), LLC
- Type
- Business
- Registered
- Mar 29, 2021
- Domain
- nielsen.com
- Industry
- Online Music and Video Streaming Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2020
- Current origin since
- Oct 2020 · 6.1 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 209.
242. 88. 0/ 22 - Netname
- CYRUSONE--C0000542-209-242-88-0-22
- Registrant
- The Nielsen Company
- Organization
- The Nielsen Company (C07535419)
- Type
- Reassigned
- Handle
- NET-209-242-88-0-1
- Parent
- NET-209-242-64-0-1
- Created
- Apr 9, 2020
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 23, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cyrusone. com - Name
- CyrusOne Abuse POC
- Phone
- +1-866-297-8766;ext2
- Handle
- APC22-ARIN