Data as of Nov 10, 2026
145.36.0.0/20
No anonymizer space · no proxy exits in 30 daysRelx Group PLC · space held by Elsevier Limited
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 |
|---|---|---|---|---|---|---|
| 145.36.0.0/16 | 65,536 | Elsevier | Elsevier Limited (ORG-EL293-RIPE) · GB | LEGACY | — | elsnetadmin@ |
| └ 145.36.0.0/20 | 4,096 | Elsevier-AWS-range | unknown | LEGACY | Feb 23, 2026 | elsnetadmin@ via Elsevier |
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
- Elsevier Limited
- Handle
- ORG-EL293-RIPE
- Range
- 145.
36. 0. 0/ 16 - Registration type
- LEGACY
- Legacy
- yes
Origin network
AS33820
GB
- Name
- Relx Group PLC
- Type
- Business
- Registered
- Aug 10, 2004
- Domain
- relx.com
- Industry
- Chemical and Pharmaceutical Manufacturing
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Oct 2020
- Current origin since
- Mar 2026 · 8 mo
- Origin networks
- 2
- Last change of origin
- Mar 2026
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS14618 not the origin | RIPE | UK-ELSEVIERLTD-1-MNT | Feb 25, 2026 | |
| AS16509 not the origin | RIPE | UK-ELSEVIERLTD-1-MNT | Feb 25, 2026 | |
| AS16509 not the origin | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Feb 25, 2026 |
| AS33820 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Mar 18, 2026 |
| AS33820 | RIPE | UK-ELSEVIERLTD-1-MNT | Mar 19, 2026 |
Whois
Registration for this announcement
- Range
- 145.
36. 0. 0/ 20 - Netname
- Elsevier-AWS-range
- Registrant country
- GB
- Organization
- Not stated by the registry
- Type
- LEGACY
- Created
- Feb 23, 2026
- Updated
- Mar 18, 2026
- Maintainer
- uk-elsevierltd-1-mnt
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Sep 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- elsnetadmin@
elsevier. com - Name
- Abuse-C Role
- Handle
- AR43025-RIPE