Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 145.36.0.0/19 | 8.2K |
0.0%
|
Relx Group Plc | GB | — | — |
| 145.36.32.0/20 | 4.1K |
0.0%
|
Relx Group Plc | GB | — | — |
| 145.36.48.0/21 | 2.0K |
0.0%
|
Relx Group Plc | GB | — | — |
| 145.36.56.0/22 | 1.0K |
0.0%
|
Relx Group Plc | GB | England | London |
| 198.176.121.0/24 | 256 |
0.0%
|
Relx Group Plc | US | — | — |
| 198.176.123.0/24 | 256 |
0.0%
|
Relx Group Plc | US | Ohio | Cincinnati |
| 198.176.124.0/24 | 256 |
0.0%
|
Relx Group Plc | US | — | — |
| 198.176.126.0/24 | 256 |
0.0%
|
Relx Group Plc | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS33820 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 145.36.54.0/24 | 33,746 | 2026-11-13 10:05:22 |
| 145.36.55.0/24 | 24,960 | 2026-11-13 09:37:29 |
| 145.36.32.0/20 | 24,851 | 2026-11-13 09:37:29 |
| 145.36.16.0/20 | 24,325 | 2026-11-13 09:37:30 |
| 145.36.59.0/24 | 23,930 | 2026-11-13 09:37:29 |
| 145.36.0.0/20 | 21,099 | 2026-11-13 09:19:26 |
| 145.36.57.0/24 | 21,066 | 2026-11-13 09:19:26 |
| 145.36.56.0/24 | 21,046 | 2026-11-13 09:19:26 |
| 145.36.58.0/24 | 20,781 | 2026-11-13 09:19:26 |
| 145.36.48.0/24 | 19,827 | 2026-11-13 09:37:00 |
| 145.36.49.0/24 | 19,717 | 2026-11-13 09:37:00 |
| 145.36.53.0/24 | 17,095 | 2026-11-13 09:36:44 |
| 145.36.51.0/24 | 17,094 | 2026-11-13 09:36:44 |
| 145.36.50.0/24 | 17,012 | 2026-11-13 09:36:44 |
| 198.176.123.0/24 | 16,045 | 2026-11-13 09:37:29 |
| 145.36.52.0/24 | 14,762 | 2026-11-13 09:19:26 |
| 198.176.121.0/24 | 14,253 | 2026-11-13 09:19:26 |
| 198.176.126.0/24 | 11,798 | 2026-11-13 09:36:44 |
| 198.176.124.0/24 | 11,370 | 2026-11-13 09:36:44 |
Frequently Asked Questions
What is AS33820?
AS33820 is an Autonomous System Number assigned to Relx Group Plc. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS33820 announce?
AS33820 announces 16.4K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in United Kingdom.
Who operates AS33820?
AS33820 is operated by Relx Group Plc. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.
What country is AS33820 registered in?
AS33820 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
