Spam Activity in Hosting Networks (ASNs) September 1, 2023 - November 30, 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 (September to November 2023)

Rank AS Name AS number # Routed
IPv4 Addresses		 # of Spammed Content
or Spambot Hosts ▼		 Spam Score
1 Google LLC 15169 11,310,592 337,990 298.83
2 Clayer Limited 137951 737,024 101,110 1371.87
3 BGP Consultancy Pte Ltd 64050 1,067,520 40,705 381.30
4 Cloudflare, Inc. 13335 2,572,032 40,674 158.14
5 ONLINE S.A.S. 12876 544,768 27,983 513.67
6 Amazon.com, Inc. 16509 45,994,496 24,549 5.34
7 IQWeb FZ-LLC 59692 7,936 23,326 29392.64
8 OVH SAS 16276 4,354,048 15,872 36.45
9 Eonix Corporation 62904 942,848 15,664 166.13
10 DigitalOcean, LLC 14061 2,873,856 13,768 47.91
11 ZOHO 2639 14,080 12,921 9176.85
12 Shenzhen Tencent Computer Systems Company Limited 132203 2,607,360 8,140 31.22
13 Google LLC 396982 34,978,560 7,053 2.02
14 QuadraNet Enterprises LLC 64270 19,968 6,969 3490.08
15 Unified Layer 46606 806,912 6,555 81.24
16 Private Layer INC 51852 30,976 6,503 2099.37
17 Hetzner Online GmbH 24940 2,356,992 6,495 27.56
18 Amazon.com, Inc. 14618 16,544,000 6,458 3.90
19 Akamai Technologies, Inc. 16625 5,758,720 6,309 10.96
20 Hong Kong Communications International Co., Limited 140227 69,888 6,006 859.38

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 (September to November 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 Clayer Limited 137951 737,024 101,110 1371.87
2 Hong Kong Communications International Co., Limited 140227 69,888 6,006 859.38
3 Namecheap, Inc. 22612 85,184 5,966 700.37
4 Aodao Inc 55020 92,672 5,931 640.00
5 ONLINE S.A.S. 12876 544,768 27,983 513.67
6 BGP Consultancy Pte Ltd 64050 1,067,520 40,705 381.30
7 Google LLC 15169 11,310,592 337,990 298.83
8 LANLIAN INTERNATIONAL HOLDING GROUP LIMITED 58931 57,344 1,366 238.21
9 Lucky Net Ltd 3254 51,200 1,168 228.13
10 Nocix, LLC 33387 69,888 1,500 214.63
11 BEKKOAME INTERNET INC. 4686 158,720 3,247 204.57
12 Tier.Net Technologies LLC 397423 59,648 1,203 201.68
13 LayerHost 46573 253,184 4,824 190.53
14 Network Solutions, LLC 19871 264,704 4,572 172.72
15 Eonix Corporation 62904 942,848 15,664 166.13
16 Cloudflare, Inc. 13335 2,572,032 40,674 158.14
17 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED 135377 156,413 2,076 132.73
18 MOACK.Co.LTD 138195 74,240 910 122.58
19 Equinix Japan Enterprise K.K. 17941 154,880 1,854 119.71
20 Contabo GmbH 51167 346,368 3,637 105.00

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