Autonomous System details

AS33820

RELX GROUP PLC  ·  relx.com

United Kingdom

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AS33820 – RELX GROUP PLC

Field Value
Country United Kingdom
Website relx.com
Hosted domains 0
IPv4 addresses 15,360
IPv6 addresses 0
ASN type Business
Registry ripe
Allocated 22 years ago on Aug 10, 2004
Updated 14 days ago on Mar 18, 2026

IP Ranges

Netblock Company Num of IPs
145.36.0.0/20 Elsevier Limited 4,096
145.36.16.0/20 Elsevier Limited 4,096
145.36.32.0/20 Elsevier Limited 4,096
145.36.48.0/24 Elsevier Limited 256
145.36.49.0/24 Elsevier Limited 256
145.36.50.0/24 Elsevier Limited 256
145.36.51.0/24 Elsevier Limited 256
145.36.52.0/24 Elsevier Limited 256
145.36.53.0/24 Elsevier Limited 256
145.36.54.0/24 Elsevier Limited 256
145.36.55.0/24 Elsevier Limited 256
145.36.56.0/24 Elsevier Limited 256
145.36.57.0/24 Elsevier Limited 256
145.36.58.0/24 Elsevier Limited 256
145.36.59.0/24 Elsevier Limited 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS33820
                                                OrgID:          AS33820
                                                ASName:         AS33820
                                                ASNumber:       AS33820
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There are 2 peers for this ASN.

Peers Name
AS14618 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
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ASN API & Database

Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS14618 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

No IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
155.204.23.108 AS15830 Equinix (EMEA) Acquisition Enterprises B.V. 0.31ms from Ashburn, US
199.203.93.220 AS1680 Cellcom Fixed Line Communication L.P 0.22ms from Haifa, IL
178.27.233.252 AS3209 Vodafone GmbH 1.02ms from Hamburg, DE
210.221.214.220 AS3786 LG DACOM Corporation 1.55ms from Incheon, KR
175.114.155.236 AS9318 SK Broadband Co Ltd 5.66ms from Incheon, KR
20.171.50.44 AS8075 Microsoft Corporation 0.20ms from Phoenix, US
194.187.72.252 AS15969 Systemia.pl Sp. z o.o. 0.67ms from Poznan, PL
189.140.175.156 AS8151 UNINET 13.80ms from Santiago de Queretaro, MX
89.137.129.140 AS12302 Vodafone Romania S.A. 18.02ms from Timisoara, RO
221.8.174.252 AS4837 CHINA UNICOM China169 Backbone 2.90ms from Changchun, CN
78.135.53.44 AS43242 ARINET SECURITY & INTERNET CONSULTANCY LTD 11.34ms from Denizli, TR
3.70.252.140 AS16509 Amazon.com, Inc. 0.43ms from Frankfurt am Main, DE
119.134.51.236 AS4134 CHINANET-BACKBONE 6.85ms from Guangzhou, CN
122.9.209.140 AS58466 CHINANET Guangdong province network 2.08ms from Guangzhou, CN
14.255.4.92 AS45899 VNPT Corp 6.91ms from Hanoi, VN
154.59.62.60 AS14703 MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC. 8.08ms from Minneapolis, US
103.70.90.12 AS135767 AGS Transact Technologies Ltd 2.66ms from Mumbai, IN
86.225.225.44 AS3215 Orange S.A. 6.95ms from Paris, FR
184.61.71.204 AS4181 TDS TELECOM 7.93ms from Seattle, US
101.64.237.28 AS4837 CHINA UNICOM China169 Backbone 8.02ms from Shanghai, CN
103.206.39.172 AS12975 PALTEL Autonomous System 4.48ms from Tel Aviv, IL
153.198.92.92 AS4713 NTT DOCOMO BUSINESS,Inc. 7.85ms from Tokyo, JP
206.246.255.188 AS7029 Windstream Communications LLC 0.43ms from Atlanta, US
76.17.5.12 AS7922 Comcast Cable Communications, LLC 9.66ms from Atlanta, US
18.188.207.172 AS16509 Amazon.com, Inc. 0.17ms from Columbus, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f5 -m8 145.36.30.242
traceroute to 145.36.30.242 (145.36.30.242): 8 hops max, 52 byte packets
5 [AS7049] 190.110.99.37 0.571 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Santiago, CL
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS33820 at robtex.

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