Spam Activity in Hosting Networks (ASNs)
June 1,2024 - August 31,2024

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 (June to August 2024)

Rank AS Name AS number # Routed
IPv4 Addresses		 # of Spammed Content
or Spambot Hosts ▼		 Spam Score
1 Amazon.com, Inc. 16509 48,689,664 182,116 37.4
2 CTG Server Limited 152194 1,131,776 154,630 1,366.3
3 Cloudflare, Inc. 13335 2,568,448 134,533 523.8
4 Dimension Network & Communication Limited 59371 53,760 116,532 21,676.3
5 Clayer Limited 137951 858,112 89,356 1,041.3
6 Microsoft Corporation 8075 66,624,512 82,074 12.3
7 CNSERVERS LLC 40065 1,401,344 76,443 545.5
8 Cloudflare London, LLC 209242 124,160 73,005 5,879.9
9 Amazon.com, Inc. 14618 17,134,592 56,215 32.8
10 OVH SAS 16276 4,413,184 45,718 103.6
11 HENGDA NETWORK LIMITED 138415 641,280 37,069 578.1
12 IQWeb FZ-LLC 59692 7,936 37,005 46,629.3
13 Google LLC 15169 11,867,648 35,917 30.3
14 Google LLC 396982 34,861,056 32,527 9.3
15 Skycloud Computing co., Ltd. 7483 6,912 29,645 42,889.2
16 Alibaba (US) Technology Co., Ltd. 45102 5,771,776 28,744 49.8
17 Contabo GmbH 51167 433,664 28,179 649.8
18 diva-e Datacenters GmbH 44066 310,528 22,773 733.4
19 POWER LINE (HK) CO., LIMITED 132839 488,960 21,185 433.3
20 Shenzhen Tencent Computer Systems Company Limited 132203 2,673,920 20,447 76.5

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 (June to August 2024)

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 Dimension Network & Communication Limited 59371 53,760 116,532 21,676.3
2 Cloudflare London, LLC 209242 124,160 73,005 5,879.9
3 SonderCloud Limited 133199 66,816 16,690 2,497.9
4 BGP Consultancy Pte Ltd 64050 76,544 17,084 2,231.9
5 Hong Kong Communications International Co., Limited 140227 62,464 11,014 1,763.3
6 CTG Server Limited 152194 1,131,776 154,630 1,366.3
7 Leaseweb USA, Inc. 30633 143,360 15,285 1,066.2
8 Clayer Limited 137951 858,112 89,356 1,041.3
9 qlhost 142062 108,288 10,964 1,012.5
10 XNNET LLC 54467 57,344 5,161 900.0
11 Cloudie Limited 55933 168,704 14,644 868.0
12 Namecheap, Inc. 22612 96,192 8,318 864.7
13 PEG TECH INC 398478 119,040 10,009 840.8
14 diva-e Datacenters GmbH 44066 310,528 22,773 733.4
15 Contabo GmbH 51167 433,664 28,179 649.8
16 Latitude.sh 396356 76,544 4,497 587.5
17 HENGDA NETWORK LIMITED 138415 641,280 37,069 578.1
18 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED 135377 159,229 8,776 551.2
19 CNSERVERS LLC 40065 1,401,344 76,443 545.5
20 STARCLOUD GLOBAL PTE., LTD. 140224 197,120 10,468 531.1

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