Data as of Nov 14, 2026
155.136.202.0/23
No anonymizer space · no proxy exits in 30 daysNatwest Markets PLC · space held by NatWest
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Recent change
New origin Nov 14, 2026
from AS21301 Natwest Markets PLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 155.136.128.0/17 since Jul 2017 | AS21054 | Business | NatWest | |
| 155.136.0.0/16 since Nov 14, 2026 | AS21301 | Business | NatWest |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 155.136.202.0/24 since Jun 2018 | AS21054 | Business | NatWest | |
| 155.136.203.0/24 since Jun 2018 | AS21054 | Business | NatWest |
Network & registry
Origin network
AS21054
GB
- Name
- Natwest Markets PLC
- Type
- Business
- Registered
- Aug 8, 2001
- Domain
- natwestmarkets.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2018
- Current origin since
- Nov 14, 2026 · under a month
- Origin networks
- 2
- Last change of origin
- Mar 2025
Recorded history
History
- Handoffs
- 1
- Also announced by
- 21301
Whois
Registration for this announcement
- Range
- 155.
136. 0. 0/ 16 - Netname
- UK-NATWEST-155-136-0-0-16
- Registrant
- NatWest
- Registrant country
- GB
- Organization
- NatWest
- Org country
- GB
- Type
- LEGACY
- Created
- Not stated by the registry
- Updated
- Apr 10, 2026
- Maintainer
- RBSG-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Nov 8, 1991
- Status
- assigned