Spam Activity in Hosting Networks (ASNs)
March 1,2023 - May 31,2023

To see where spammed content or spambots were being hosted, we collected the IP addresses that spam domains were resolving to when spam activity was detected and added to a threat or block list. We then identified the ASN where the IP prefix containing the IP address was allocated. This number identifies the hosting network where spammed content or a spambot was reported.

In the table below, we show the twenty hosting networks with the highest numbers of reports of spammed content or spambots. Complete lists of ASNs reported for the period can be downloaded in CSV format from the Records page.

Ranking of Hosting Networks (ASNs) by Hosted Spammed Content or Spambots (March to May 2023)

Rank AS Name AS number # Routed
IPv4 Addresses		 # of Spammed Content
or Spambot Hosts ▼		 Spam Score
1 Clayer Limited 137951 706,048 98,541 1395.67
2 Cloudflare, Inc. 13335 2,530,048 84,129 332.52
3 ONLINE S.A.S. 12876 544,768 50,184 921.20
4 Google LLC 15169 11,992,832 48,838 40.72
5 Amazon.com, Inc. 16509 44,503,552 43,694 9.82
6 OVH SAS 16276 4,247,296 31,684 74.60
7 Namecheap, Inc. 22612 74,432 31,628 4249.25
8 HONG KONG Megalayer Technology Co.,Limited 139646 579,328 21,667 374.00
9 Hetzner Online GmbH 24940 2,357,504 16,465 69.84
10 Linode, LLC 63949 755,456 14,366 190.16
11 BGP Consultancy Pte Ltd 64050 1,090,816 13,991 128.26
12 M247 Ltd 9009 1,192,704 13,298 111.49
13 LayerHost 46573 247,296 10,407 420.83
14 EURO LIR LLC 203973 1,024 10,273 100322.27
15 Eonix Corporation 62904 967,680 9,589 99.09
16 Amazon.com, Inc. 14618 16,449,024 9,528 5.79
17 Unified Layer 46606 803,072 8,766 109.16
18 Delis LLC 211252 23,040 7,274 3157.12
19 QuadraNet Enterprises LLC 8100 2,750,976 7,230 26.28
20 BEKKOAME INTERNET INC. 4686 158,720 7,019 442.23

To allow comparison of large and small Hosting Networks (ASNs), we also rank Hosting Networks based on a metric, hosting network spam score, which is calculated by dividing the number of spammed content or spambot hosts reported against an ASN by the number of routable IPv4 addresses allocated to that ASN.

Hosting (ASN) Spam Score = (number of spammed content or spambot hosts /IP Addresses in ASN) * 10,000

In the table below, we show the top 20 hosting operators based on spam score.

Ranking of Hosting Networks (ASNs) by Spam Attack Score (March to May 2023)

Hosting Networks (ASNs) with a minimum of 50,000 IPv4 addresses and 25 spam attacks

Rank AS Name AS number # Routed IPv4
Addresses		 # of Spammed Content
or Spambot Hosts		 Spam Score ▼
1 Namecheap, Inc. 22612 74,432 31,628 4249.25
2 Clayer Limited 137951 706,048 98,541 1395.67
3 ONLINE S.A.S. 12876 544,768 50,184 921.20
4 Fly.io, Inc. 40509 58,112 4,743 816.18
5 SonderCloud Limited 133199 59,392 3,219 541.99
6 DATA WING LIMITED 63888 57,856 2,723 470.65
7 BEKKOAME INTERNET INC. 4686 158,720 7,019 442.23
8 LayerHost 46573 247,296 10,407 420.83
9 HONG KONG Megalayer Technology Co.,Limited 139646 579,328 21,667 374.00
10 Cloudflare, Inc. 13335 2,530,048 84,129 332.52
11 STARK INDUSTRIES SOLUTIONS LTD 44477 50,688 1,560 307.77
12 Interserver, Inc 19318 129,280 3,813 294.94
13 Bursabil Teknoloji A.S. 60721 56,320 1,531 271.84
14 Nocix, LLC 33387 67,328 1,767 262.45
15 Equinix Japan Enterprise K.K. 17941 156,416 3,988 254.96
16 Hostinger International Limited 47583 166,400 4,066 244.35
17 Lucky Net Ltd 3254 51,200 1,241 242.38
18 Forewin Telecom Group Limited 38186 68,096 1,634 239.96
19 DediPath 35913 282,624 6,633 234.69
20 Tier.Net Technologies LLC 397423 58,112 1,134 195.14

Quarterly Update:
Key Statistics		 Quarterly Update:
Top Level Domains		 Quarterly Update:
Registrars		 Quarterly Update:
Hosting Networks
Quarter over Quarter:
Hosting Networks