Malware Activity in Hosting Networks (ASNs)
April 1, 2021 - June, 2021

To see where malware was being served up, or distributed among peer-to-peer hosts, we collected the IP addresses that malware domains and malware URLs were resolving to when malware activity was reported. We then identified the Autonomous System (ASN) where the IP prefix containing the IP address to identif the hosting network where malware were reported.

For the period, we identified 233 with IPv4 addresses reported as serving up or distributing malware:

- 88 hosting networks had 100 or more IPv4 addresses,

- 34 hosting networks had 500 or more IPv4 addresses,

- 27 hosting networks had 1000 or more IPv4 addresses, and

- 9 hosting networks had 5000 or more reported IPv4 addresses.

In the table below, we show the twenty hosting networks with the highest numbers of IPv4 addresses reported as serving up or distributing malware.

Ranking of Hosting Networks (ASNs)
by Malware Records (April to June 2021)

Rank AS Name AS number # Routed
IPv4 Addresses		 Total Malware Records ▼
1 CHINA169-BACKBONE CHINA UNICOM China169 Backbone 4837 58,760,448 148,562
2 PTK - Telekomi i Kosoves SH.A. 8661 84,224 94,869
3 BSNL-NIB National Internet Backbone 9829 10,840,832 64,301
4 CHINA169-GZ China Unicom IP network China169 Guangdong province 17816 3,948,288 35,535
5 CHINANET-BACKBONE No.31 4134 115,596,032 24,349
6 CNCGROUP-GZ China Unicom Guangzhou network 17622 1,352,960 12,324
7 HATHWAY-NET-AP Hathway IP Over Cable Internet 17488 999,680 9,870
8 CLOUDFLARENET 13335 2,353,664 6,176
9 CNCGROUP-SZ China Unicom Shenzen network 17623 953,856 4,557
10 VNPT-AS-VN VNPT Corp 45899 19,107,328 4,230
11 UNIFIEDLAYER-AS-1 46606 1,393,664 4,098
12 AS-COLOCROSSING 36352 783,616 2,919
13 CMNET-GD Guangdong Mobile Communication Co.Ltd. 9808 62,860,800 2,748
14 GOOGLE 15169 23,095,552 2,413
15 MTNL-AP Mahanagar Telephone Nigam Limited 17813 2,744,320 2,278
16 TOT-NET TOT Public Company Limited 23969 5,654,272 2,211
17 BEAMTELE-AS-AP ACTFIBERNET Pvt Ltd 131269 180,480 1,808
18 DIGITALOCEAN-ASN 14061 2,553,088 1,739
19 FPT-AS-AP The Corporation for Financing & Promoting Technology 18403 5,349,888 1,388
20 ASIANET Cable ISP in India 17465 116,736 1,261