ASN Reputation Tracking. The good, the bad, and the ugly.

ASN traffic analysisASN reputation tracking

Examining traffic from ASN routed IP ranges, it becomes relatively clear which ASN's do little to nothing to prevent Internet abuse. Some of these ASN's have surfaced as bona fide security companies and governments, even 'reputable' big tech is guilty of conduct unbecoming.

The data as shown below is a 30 day look back rolling window of all inbound Internet traffic received at this site to date. Only the first 50 of each type are shown. A very interesting pattern appears when you look at the three queries done on the dataset. First all ASN's that only have bad and dangerous IP traffic, the second are ASN's that have no bad IP traffic at all, and the third is a where the amount of 'good' traffic is higher than 'bad' traffic.

Bad reputation ASN report

These ASN network addresses are ideal candidates for firewall DROP (Do not Route Or Peer) lists. The live BAD ASN list as seen below, the amount of bad IP traffic compared to allowed and legitimate IP traffic which in this case is zero. This list shows network ranges that only have bad traffic.

blockedpasstypenetrangenamedescriptioncnturllast seen
3303760DCH45.142.192.0/22Bunea TELECOM SRLBunea Telecom SRLRObunea.eu31/03/2025
1840570ISP83.222.184.0/21NET1 Ltd.Net1 Ltd.BGnet1.bg28/04/2025
370910DCH162.216.148.0/22GOOGLEGoogle LLCUSgoogle.com28/04/2025
316150ISP83.222.184.0/21NET1 Ltd.Net1 Ltd.BGnet1.bg31/03/2025
303460DCH92.63.197.0/24OOO SibirInvestOOO SIBIRINVESTNLngs.ru28/04/2025
287760DCH162.216.148.0/22GOOGLEGoogle LLCUSgoogle.com31/03/2025
271000DCH47.242.0.0/15Alibaba (US) Technology Co., Ltd.Alibaba (US) Technology Co. Ltd.CNalibaba-inc.com31/03/2025
175150DCH15.184.0.0/15AMAZON-02Amazon.com Inc.USamazon.com28/04/2025
164740DCH162.142.125.0/24CENSYS-ARIN-01 US 28/04/2025
141160DCH194.180.48.0/22SPRINTLINKSprintUSstingers.io31/03/2025
119850DCH162.142.125.0/24CENSYS-ARIN-01 US 31/03/2025
99270DCH5.188.206.0/24Krez 999 EoodKrez 999 EOODBGpinspb.ru28/04/2025
93340DCH185.242.226.0/24SpectraIP B.V.SpectraIP B.V.NLbreezle.net31/03/2025
89150DCH185.242.226.0/24SpectraIP B.V.SpectraIP B.V.NLbreezle.net28/04/2025
77240DCH78.128.113.0/24Miti 2000 EOODMITI 2000 EOODBGlir.bg28/04/2025
72580DCH65.49.1.0/24PDXHOSTING-01Portland Internet Hosting LLCUSpdxhosting.net28/04/2025
68730SES213.180.192.0/19YANDEX LLC RU 28/04/2025
66660DCH64.62.156.0/24AXIA-CONNECT-USA CA 28/04/2025
60360---122.228.112.0/21WENZHOU, ZHEJIANG ProvinceWENZHOU ZHEJIANG Province P.R.China.CNchinatelecom.com.cn31/03/2025
58710DCH64.62.197.0/24HURRICANEHurricane Electric LLCUStennwireless.com31/03/2025
58400SES5.255.192.0/18YANDEX LLC RU 28/04/2025
51610SES213.180.192.0/19YANDEX LLC RU 31/03/2025
51070DCH65.49.1.0/24PDXHOSTING-01Portland Internet Hosting LLCUSpdxhosting.net31/03/2025
48990SES87.250.224.0/19YANDEX LLC RU 28/04/2025
48630SES95.108.128.0/17YANDEX LLC RU 28/04/2025
47660DCH79.124.49.0/24Tamatiya EOODTamatiya EOODBGlir.bg31/03/2025
46720SES5.255.192.0/18YANDEX LLC RU 31/03/2025
45480DCH185.224.128.0/22SpectraIP B.V.SpectraIP B.V.NLbreezle.net28/04/2025
44190DCH141.98.10.0/23UAB Host Baltic LT 28/04/2025
42230DCH64.62.156.0/24AXIA-CONNECT-USA CA 31/03/2025
42190DCH15.184.0.0/15AMAZON-02Amazon.com Inc.USamazon.com30/03/2025
41550DCH152.32.128.0/19UCLOUD INFORMATION TECHNOLOGY (HK) LIMITEDUCloud Information Technology (HK) LimitedHKzenlayer.com31/03/2025
40750DCH91.191.209.0/24L&L Investment Ltd. BG 28/04/2025
39290DCH80.82.76.0/22IP Volume incIP Volume IncSCpinspb.ru28/04/2025
37990SES87.250.224.0/19YANDEX LLC RU 31/03/2025
37900DCH91.191.209.0/24L&L Investment Ltd. BG 31/03/2025
37840DCH154.212.140.0/22MULTA-ASN1Multacom CorporationUSmultacom.com28/04/2025
37530DCH185.224.128.0/22SpectraIP B.V.SpectraIP B.V.NLbreezle.net31/03/2025
36720SES95.108.128.0/17YANDEX LLC RU 31/03/2025
34860ISP87.121.84.0/22SKAT TV Ltd.Skat TV Ltd.BGtvskat.net28/04/2025
34090DCH47.242.0.0/15Alibaba (US) Technology Co., Ltd.Alibaba (US) Technology Co. Ltd.CNalibaba-inc.com27/04/2025
33400DCH45.135.194.0/24SkyLink Data Center BVSkylink Data Center BVNLipv4superhub.com28/04/2025
33240DCH152.32.128.0/19UCLOUD INFORMATION TECHNOLOGY (HK) LIMITEDUCloud Information Technology (HK) LimitedHKzenlayer.com28/04/2025
33020DCH156.229.128.0/17GROUP-IID-01Intercontinental Internet Data CorpUSnextecloud.cn31/03/2025
32950DCH46.17.96.0/21Hostkey B.v.Hostkey B.V.NLhostkey.com24/04/2025
32850 109.236.61.0/24Digital Energy Technologies Ltd.Digital Energy Technologies Ltd.GBrackedmetal.com31/03/2025
30830DCH185.156.73.0/24OOO SibirInvestOOO SIBIRINVESTNLngs.ru31/03/2025
30110DCH47.76.192.0/19SPRINTLINKSprintUSstingers.io31/03/2025
28500DCH152.32.192.0/19UCLOUD INFORMATION TECHNOLOGY (HK) LIMITEDUCloud Information Technology (HK) LimitedHKzenlayer.com31/03/2025
27700 196.251.116.0/22xneeloxneeloZAhetzner.de28/04/2025

NOTE: This data also includes ASN reputation banning. This means that if a certain amount of constant bad IP traffic is received by a defined number of IP addresses within the ASN range within a certain period of time. Then all IP traffic from all addresses of said ASN will will be blocked for a defined period of time.

Good reputation ASN report

The live GOOD ASN list as seen below, the amount of good IP traffic compared to unfriendly IP traffic which in this case must be zero. This list shows network ranges that only have bad traffic.

blockedpasstypenetrangenamedescriptioncnturllast seen
038573ISP50.200.128.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
038534ISP50.200.172.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
028666ISP50.200.172.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net31/03/2025
028620ISP50.200.128.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net31/03/2025
015877EDU141.39.0.0/16Verein zur Foerderung eines Deutschen ForschungsneVerein zur Foerderung eines Deutschen Forschungsnetzes e.V.DEfu-berlin.de28/04/2025
015547ISP50.206.212.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
012823DCH74.125.0.0/16GOOGLEGoogle LLCUSgoogle.com31/03/2025
011767EDU141.39.0.0/16Verein zur Foerderung eines Deutschen ForschungsneVerein zur Foerderung eines Deutschen Forschungsnetzes e.V.DEfu-berlin.de31/03/2025
011553ISP50.206.212.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net31/03/2025
08520ISP83.236.0.0/16Plusnet GmbHPlusnet GmbHDEeifel-net.net28/04/2025
08124COM213.61.0.0/16COLT Technology Services Group LimitedColt Technology Services Group LimitedGBopen-sky.it28/04/2025
07962COM195.185.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag28/04/2025
07936ISP92.192.0.0/13Plusnet GmbHPlusnet GmbHDEeifel-net.net28/04/2025
07928ISP178.183.192.0/19T-Mobile Polska S.A.T-Mobile Polska S.A.PLt-mobile.pl28/04/2025
07913EDU149.205.0.0/16Verein zur Foerderung eines Deutschen ForschungsneVerein zur Foerderung eines Deutschen Forschungsnetzes e.V.DEfu-berlin.de28/04/2025
07836ISP113.21.32.0/20Buroserv Australia Pty LtdBuroserv Australia Pty LtdAUtelemates.com.au28/04/2025
07810---195.55.168.0/22Telefonica De EspanaTelefonica de EspanaEStelefonica.com28/04/2025
07791ISP80.32.0.0/13Telefonica De EspanaTelefonica de EspanaEStelefonica.com28/04/2025
07774DCH194.29.224.0/19IPB Internet Provider in Berlin GmbHIPB Internet Provider in Berlin GmbHDEipb.de28/04/2025
07772ISP213.30.192.0/181&1 Versatel Deutschland GmbH1&1 Versatel Deutschland GmbHDEversatel.de28/04/2025
07769DCH207.114.248.0/21LVLT-3549Level 3 Parent LLCUScenturylink.com28/04/2025
07582DCH51.8.0.0/16Microsoft Deutschland MCIO GmbHMicrosoft Deutschland MCIO GmbHDEmicrosoft.com28/04/2025
07159EDU128.187.0.0/16BYUBrigham Young UniversityUSbyu.edu31/03/2025
06334ISP83.236.0.0/16Plusnet GmbHPlusnet GmbHDEeifel-net.net31/03/2025
05946COM213.61.0.0/16COLT Technology Services Group LimitedColt Technology Services Group LimitedGBopen-sky.it31/03/2025
05920COM195.52.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag31/03/2025
05918EDU148.81.128.0/18Naukowa I Akademicka Siec Komputerowa Instytut BadNaukowa i Akademicka Siec Komputerowa Instytut BadawczyPLnask.pl31/03/2025
05910COM195.185.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag31/03/2025
05898ISP178.183.192.0/19T-Mobile Polska S.A.T-Mobile Polska S.A.PLt-mobile.pl31/03/2025
05870EDU149.205.0.0/16Verein zur Foerderung eines Deutschen ForschungsneVerein zur Foerderung eines Deutschen Forschungsnetzes e.V.DEfu-berlin.de31/03/2025
05828ISP92.192.0.0/13Plusnet GmbHPlusnet GmbHDEeifel-net.net31/03/2025
05799---195.55.168.0/22Telefonica De EspanaTelefonica de EspanaEStelefonica.com31/03/2025
05785ISP113.21.32.0/20Buroserv Australia Pty LtdBuroserv Australia Pty LtdAUtelemates.com.au31/03/2025
05776DCH194.29.224.0/19IPB Internet Provider in Berlin GmbHIPB Internet Provider in Berlin GmbHDEipb.de31/03/2025
05770ISP213.30.192.0/181&1 Versatel Deutschland GmbH1&1 Versatel Deutschland GmbHDEversatel.de31/03/2025
05760DCH207.114.248.0/21LVLT-3549Level 3 Parent LLCUScenturylink.com31/03/2025
05301ISP78.10.0.0/15Netia SANetia SAPLnetia.pl29/03/2025
04013COM212.172.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag15/04/2025
03758DCH62.246.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag28/04/2025
03096DCH141.0.8.0/21Opera Software ASOpera Software ASNOopera.com28/04/2025
03068COM212.172.0.0/16ecotel communication agEcotel Communication AGDEwebhoster.ag31/03/2025
02649ISP195.169.0.0/16SURF B.V.Surfnet B.V.NLrug.nl28/04/2025
02508ISP50.205.20.0/22COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
02502DCH66.102.0.0/20GOOGLEGoogle LLCUSgoogle.com28/04/2025
02464ISP43.251.52.0/22Buroserv Australia Pty LtdBuroserv Australia Pty LtdAUtelemates.com.au28/04/2025
02179DCH114.119.128.0/19HUAWEI CLOUDSHuawei CloudsHKhuawei.com28/04/2025
02112CDN172.69.160.0/19CLOUDFLARENETCloudFlare IncUScloudflare.com27/04/2025
02033SES173.252.64.0/18FACEBOOKFacebook Inc.USlespneuschezvous.fr28/04/2025
01978DCH114.119.128.0/19HUAWEI CLOUDSHuawei CloudsHKhuawei.com31/03/2025
01922ISP49.144.0.0/13Philippine Long Distance Telephone CompanyPhilippine Long Distance Telephone CompanyPHpldt.com31/03/2025

Poor reputation ASN report

The live OK, MAYBE ASN list as seen below, the amount of good IP traffic that is larger than IP traffic aimed at ports and services clearly indicating malicious or sniffing activity. This list shows network ranges that have good and bad traffic.

blockedpasstypenetrangenamedescriptioncnturllast seen
56226146433ISP222.252.0.0/15VNPT CorpVNPT CorpVNvnpt.com.vn28/04/2025
400125749SES66.249.64.0/19GOOGLEGoogle LLCUSgoogle.com28/04/2025
323811907SES66.249.64.0/19GOOGLEGoogle LLCUSgoogle.com31/03/2025
24392459DCH34.160.0.0/12GOOGLEGoogle LLCUSgoogle.com27/04/2025
2335151476ISP222.252.0.0/15VNPT CorpVNPT CorpVNvnpt.com.vn31/03/2025
183821242DCH72.14.192.0/18GOOGLEGoogle LLCUSgoogle.com28/04/2025
14921982DCH13.64.0.0/11MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com28/04/2025
13282382DCH34.80.0.0/12GOOGLEGoogle LLCUSgoogle.com28/04/2025
113219735CDN104.16.0.0/12CLOUDFLARENETCloudFlare IncUScloudflare.com31/03/2025
107517596CDN104.16.0.0/12CLOUDFLARENETCloudFlare IncUScloudflare.com28/04/2025
9532710ISP172.56.0.0/14T-MOBILE-AS21928T-Mobile USA Inc.USt-mobile.com31/03/2025
9251709ISP196.188.0.0/14Ethiopian Telecommunication CorporationEthioNet-ASETethiotelecom.et28/04/2025
9091981DCH13.64.0.0/11MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com31/03/2025
8321311DCH47.79.96.0/19SPRINTLINKSprintUSstingers.io27/04/2025
7874580ISP223.122.0.0/15Guangdong Mobile Communication Co.Ltd.Guangdong Mobile Communication Co.Ltd.CNchinamobileltd.com31/03/2025
7401484DCH34.128.0.0/11GOOGLEGoogle LLCUSgoogle.com28/04/2025
721875DCH51.158.0.0/15Online S.a.s.Online S.A.S.FRonline.net28/04/2025
6981211DCH35.224.0.0/12GOOGLEGoogle LLCUSgoogle.com28/04/2025
67810738DCH72.14.192.0/18GOOGLEGoogle LLCUSgoogle.com31/03/2025
6521820ISP196.188.0.0/14Ethiopian Telecommunication CorporationEthioNet-ASETethiotelecom.et31/03/2025
6491249DCH47.79.0.0/19SPRINTLINKSprintUSstingers.io28/04/2025
623650DCH170.106.0.0/16Tencent Building, Kejizhongyi AvenueTencent Building Kejizhongyi AvenueCNtencent.com28/04/2025
5951618ISP84.35.0.0/16Infopact Netwerkdiensten B.V. NL 25/04/2025
582741DCH129.226.0.0/16Tencent Building, Kejizhongyi AvenueTencent Building Kejizhongyi AvenueCNtencent.com28/04/2025
5784146DCH52.160.0.0/11MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com28/04/2025
5721435DCH40.76.0.0/14MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com31/03/2025
566577DCH51.158.0.0/15Online S.a.s.Online S.A.S.FRonline.net31/03/2025
5491188ISP73.0.0.0/9COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
5435896MOB152.56.0.0/14Reliance Jio Infocomm LimitedReliance Jio Infocomm LimitedINakamai.com28/04/2025
4702079DCH40.76.0.0/14MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com28/04/2025
435507DCH44.224.0.0/11AMAZON-02Amazon.com Inc.USamazon.com28/04/2025
4254307DCH141.0.8.0/21Opera Software ASOpera Software ASNOopera.com31/03/2025
3721589CDN172.226.0.0/15Akamai International B.V.Akamai International B.V.NLakamai.com31/03/2025
3665082ISP223.122.0.0/15Guangdong Mobile Communication Co.Ltd.Guangdong Mobile Communication Co.Ltd.CNchinamobileltd.com28/04/2025
355509DCH150.109.0.0/17Tencent Building, Kejizhongyi AvenueTencent Building Kejizhongyi AvenueCNtencent.com28/04/2025
3471233ISP27.34.0.0/17WorldLink Communications Pvt LtdWorldLink Communications Pvt LtdNPwlnet.com28/04/2025
34512389DCH74.125.0.0/16GOOGLEGoogle LLCUSgoogle.com28/04/2025
334405DCH144.202.0.0/17AS-CHOOPAThe Constant Company LLCUSvultr.com31/03/2025
29210542DCH193.186.4.0/24GOOGLEGoogle LLCUSgoogle.com31/03/2025
285506DCH35.240.0.0/13GOOGLEGoogle LLCUSgoogle.com28/04/2025
277793ISP73.0.0.0/9COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net31/03/2025
277683DCH34.128.0.0/11GOOGLEGoogle LLCUSgoogle.com31/03/2025
275338DCH101.32.0.0/16Tencent Building, Kejizhongyi AvenueTencent Building Kejizhongyi AvenueCNtencent.com28/04/2025
261817DCH20.40.0.0/14MICROSOFT-CORP-MSN-AS-BLOCKMICROSOFT-CORP-MSN-AS-BLOCKUSmicrosoft.com28/04/2025
259287DCH35.184.0.0/13GOOGLEGoogle LLCUSgoogle.com28/04/2025
257893ISP73.192.0.0/10COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net28/04/2025
252587DCH152.228.128.0/17OVH SASOVH SASFRovh.com31/03/2025
250268ISP68.32.0.0/11COMCAST-7922Comcast Cable Communications LLCUScomcastbusiness.net31/03/2025
2401372ISP47.192.0.0/12FRONTIER-FRTRFrontier Communications of America Inc.USfrontier.com28/04/2025
233427ISP14.160.0.0/11VNPT CorpVNPT CorpVNvnpt.com.vn28/04/2025
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