Autonomous Systems Emissions Index

Networks ranked by how much they probe our honeypots relative to the IPv4 space they announce, so a small busy network outranks a large quiet one. Refreshed hourly.

How the ranking works

The headline figure, shortened to AEI in the table and the chart, is probes per 1,000 announced addresses over the last 7 days. Several networks near the top run internet-wide scans for research and security and carry a scanner tag, so you can read their position with that in mind.

Window7 days 30 days 90 daysScannersShow Hide

Top ten by AEI, numbered 67 other ranked networks Declared scanner

Both axes multiply into the AEI, so the dotted diagonals are lines of equal rank and the index reads as distance up and to the right. The corners separate how a network probes: the top ten announce 10.5K addresses between them and sent 379.6K probes. Four of them are declared scanners.

#	7d	Network	AEI ▾	Probes	IPs	Announced	Probes / IP	IPs / 1k
1	–	AS208137 Feo Prest SRL 🇩🇪 448 83 2072 447	113.5K	87.1K	19	768	4.6K	24.7
2	–	AS398705 Censys, Inc.scanner 🇺🇸 1963 9090 8883 18245	104.7K	53.6K	16	512	3.4K	31.2
3	–	AS48090 Techoff Srv Limited 🇧🇬 443 22 3702 80	65.0K	49.9K	18	768	2.8K	23.4
4	▲ 11	AS209334 Modat B.V.scanner 🇨🇦 6379 20000 17120 747	43.3K	33.2K	45	768	738	58.6
5	–	AS212835 Shesternin Vladimir Anatolievich 🇷🇺 3443 27443 591 8906	38.8K	19.9K	16	512	1.2K	31.2
6	–	AS204428 SS-Net 🇷🇴 80 443 3000 3389	38.3K	9.8K	24	256	408	93.8
7	▼ 3	AS213412 ONYPHE SASscanner 🇺🇸 3133 554 4604 20118	32.0K	41.0K	1.0K	1.3K	40	800.0
8	–	AS213790 Limited Network LTD 🇳🇱 8888 5000 5001 443	16.6K	17.0K	21	1.0K	811	20.5
9	▼ 3	AS398324 Censys, Inc.scanner 🇺🇸 4839 4840 4841 9090	15.1K	65.8K	366	4.4K	180	84.1
10	▼ 3	AS9465 AGOTOZ PTE. LTD. 🇭🇰 5601 5432 8001 9999	8.4K	2.2K	52	256	42	203.1
11	▼ 6	AS398722 Censys, Inc.scanner 🇺🇸 20547 103 10261 2281	5.3K	2.7K	93	512	29	181.6
12	▲ 1	AS14987 Rethem Hosting LLC 🇺🇸 1633 30055 3265 1757	4.2K	4.3K	114	1.0K	37	111.3
13	▼ 3	AS401626 Netiface America, Inc. 🇦🇪 27017 5432 31810 4306	2.8K	2.8K	22	1.0K	129	21.5
14	▲ 3	AS202425 IP Volume inc 🇳🇱 27017 8123 6969 60000	2.5K	35.6K	52	14.1K	685	3.7
15	▼ 6	AS215925 Vpsvault.host Ltd 🇺🇸 80 81 8080 9090	2.0K	1.5K	13	768	116	16.9
16	▲ 3	AS211680 Sistemas Informaticos, S.A. 🇵🇹 443 80 53 9443	1.8K	1.9K	160	1.0K	12	156.2
17	▲ 1	AS212512 Detai Prosperous Technologies Limited 🇩🇪 6379 1723 11001 800	1.8K	2.8K	12	1.5K	230	7.8
18	▼ 7	AS197170 TechTies Inc. 🇳🇱 5432 5434 5433 5435	1.7K	5.6K	40	3.3K	140	12.0
19	▲ 1	AS51396 Pfcloud UG (haftungsbeschrankt) 🇳🇱 25565 80 81 8080	1.5K	11.7K	49	7.9K	239	6.2
20	▼ 6	AS197769 VPS Dedicated LLC 🇸🇮 80 443 3000 37777	1.5K	3.0K	17	2.0K	177	8.3
21	▼ 9	AS219502 Storm Industries LLC 🇳🇱 7681 8080 60001 8443	1.5K	1.9K	42	1.3K	44	32.8
22	–	AS50219 Valence Technology Co. 🇺🇸 33389 3389 5006 5443	1.1K	1.1K	12	1.0K	93	11.7
23	▲ 2	AS47890 Unmanaged Ltd 🇷🇴 22 443 444 3128	438	2.6K	10	5.9K	258	1.7
24	▼ 3	AS202412 Omegatech LTD 🇳🇱 1723 443 5555 1880	354	2.2K	191	6.1K	11	31.1
25	–	AS402253 SKN Subnet & Telecom Ltd 🇨🇭 443 80 8080 25565	350	1.2K	13	3.3K	90	3.9
26	–	AS22168 The Shadowserver Foundation, Inc.scanner 🇺🇸 10514 4848 11443 8080	345	3.1K	56	9.0K	55	6.2
27	▼ 3	AS201814 MEVSPACE sp. z o.o. 🇵🇱 3629 10801 4153 10800	230	6.7K	10	28.9K	666	0.3
28	–	AS264628 CORPORACION FIBEX TELECOM, C.A. 🇻🇪 39131 445	151	1.6K	11	10.5K	144	1.0
29	▼ 3	AS265691 WI-NET TELECOM S.A.C. 🇵🇪 39131 1433	147	7.8K	20	53.2K	392	0.4
30	▼ 2	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED 🇭🇰 36659 2690 10629 443	124	24.1K	673	194.6K	36	3.5
31	new	AS270068 DESARROLLO DE INFRAESTRUCTURA DE TELECOMUN 🇵🇪 39131	84	1.3K	13	15.4K	100	0.8
32	▼ 1	AS6939 Hurricane Electric LLC 🇺🇸 8090 9090 3000 11434	48	22.8K	908	477.4K	25	1.9
33	▲ 1	AS27882 Telefonica Celular de Bolivia S.A. 🇧🇴 39131 445	33	2.8K	15	83.5K	184	0.2
34	▼ 5	AS17072 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE 🇲🇽 39131 445 37777	31	2.5K	24	81.7K	104	0.3
35	▼ 2	AS57269 Digi Spain Telecom S.A 🇪🇸 39131 3306	22	6.1K	26	281.1K	235	0.1
36	▼ 1	AS10439 CariNet, Inc. 🇺🇸 443 6379 445 3389	18	1.9K	39	106.8K	50	0.4
37	▲ 1	AS27947 Telconet S.A 🇪🇨 39131 445 1433	15	8.2K	31	534.3K	265	0.1
38	▲ 2	AS14061 DigitalOcean, LLC 🇺🇸 27017 1433 9093 80	13	41.7K	2.5K	3.1M	17	0.8
39	▲ 5	AS63949 Akamai Connected Cloud 🇺🇸 443 8080 80 3306	12	17.0K	336	1.4M	51	0.2
40	▼ 3	AS12252 America Movil Peru S.A.C. 🇵🇪 39131 445	11	7.3K	25	655.4K	293	0.0
41	–	AS27747 Telecentro S.A. 🇦🇷 39131 445 37777 8080	11	6.6K	36	623.6K	182	0.1
42	▲ 1	AS396982 Google LLC 🇺🇸 443 3389 21 143	10	218.5K	3.0K	22.0M	72	0.1
43	▼ 4	AS52468 UFINET PANAMA S.A. 🇨🇴 39131 445 8080	9	2.2K	16	246.0K	141	0.1
44	▲ 2	AS21859 Zenlayer Inc 🇵🇹 8001 443 3388 53	6	4.1K	169	737.0K	24	0.2
45	▲ 2	AS9009 M247 Europe SRL 🇩🇪 80 27017 39131 2707	5	8.6K	13	1.6M	661	0.0
46	▲ 2	AS11664 Techtel LMDS Comunicaciones Interactivas S 🇦🇷 39131 443 80 445	4	4.8K	29	1.1M	164	0.0
47	▲ 7	AS6147 INTEGRATEL PERU S.A.A. 🇵🇪 39131 22	4	6.3K	33	1.5M	192	0.0
48	▲ 8	AS51167 Contabo GmbH 🇫🇷 3000 443 80 6380	3	1.4K	57	542.7K	25	0.1
49	–	AS22927 Telefonica de Argentina 🇦🇷 39131 445	2	9.6K	56	4.1M	172	0.0
50	▲ 5	AS7303 Telecom Argentina S.A. 🇦🇷 39131 445 3389 25568	2	19.7K	44	8.4M	447	0.0
51	▲ 21	AS31898 Oracle Corporation 🇸🇬 8443 8080 80 443	2	13.2K	98	5.7M	135	0.0
52	▲ 11	AS13335 Cloudflare, Inc. 🇺🇸 443 39131 37777 445	2	2.9K	125	1.5M	23	0.1
53	▲ 5	AS45102 Alibaba (US) Technology Co., Ltd. 🇸🇬 443 18789 22 9100	2	10.9K	2.3K	5.7M	5	0.4
54	▲ 11	AS13999 Mega Cable, S.A. de C.V. 🇲🇽 39131 445 1433	2	3.4K	29	2.0M	118	0.0
55	▼ 2	AS22047 VTR BANDA ANCHA S.A. 🇨🇱 39131 37777	2	2.6K	10	1.6M	259	0.0
56	▲ 14	AS7418 TELEFONICA CHILE S.A. 🇨🇱 39131	2	3.6K	21	2.4M	174	0.0
57	–	AS14593 Space Exploration Technologies Corporation 🇬🇹 39131 1433	1	1.4K	19	965.1K	72	0.0
58	▼ 6	AS10620 Telmex Colombia S.A. 🇨🇴 39131 81	1	2.3K	18	1.8M	127	0.0
59	▲ 2	AS12479 Orange Espagne SA 🇪🇸 39131 445 1433 5000	1	8.1K	30	7.0M	271	0.0
60	▲ 4	AS28573 Claro NXT Telecomunicacoes Ltda 🇧🇷 39131 445 1433 22	1	7.9K	19	10.0M	416	0.0
61	▲ 12	AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 🇨🇳 80 22 443 8624	1	9.0K	122	13.0M	74	0.0
62	▲ 9	AS13489 UNE EPM TELECOMUNICACIONES S.A. 🇨🇴 39131 445	1	2.8K	27	4.2M	105	0.0
63	▲ 6	AS7713 PT Telekomunikasi Indonesia 🇮🇩 135 445 1433 80	0	2.0K	101	4.3M	20	0.0
64	▲ 4	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 🇨🇴 39131 445 1433 22	0	1.3K	24	3.1M	54	0.0
65	▲ 12	AS8452 IDDQD-AS 🇪🇬 1433 445 8083 80	0	2.5K	73	7.6M	34	0.0
66	▲ 10	AS8151 UNINET 🇲🇽 39131 445 1433 22	0	4.1K	80	13.6M	51	0.0
67	–	AS3352 Telefonica De Espana S.a.u. 🇪🇸 39131 445 1433 5555	0	2.8K	20	10.4M	139	0.0
68	▼ 2	AS16276 OVH SAS 🇫🇷 554 3000 20081 445	0	1.2K	55	4.6M	21	0.0
69	–	AS12430 Vodafone Spain 🇪🇸 39131 22	0	1.1K	11	4.5M	100	0.0
70	▲ 5	AS4134 Chinanet 🇨🇳 445 1433 22 135	0	22.3K	639	110.7M	35	0.0
71	▲ 3	AS8075 Microsoft Corporation 🇺🇸 80 22 9200 443	0	16.2K	2.1K	81.1M	8	0.0
72	–	AS4808 China Unicom Beijing Province Network 🇨🇳 22 1433 49671 9200	0	1.2K	51	7.9M	23	0.0
73	▲ 9	AS4837 CHINA UNICOM China169 Backbone 🇨🇳 1433 3389 22 6379	0	6.5K	653	57.7M	10	0.0
74	▲ 4	AS14618 Amazon.com, Inc. 🇺🇸 443 8443 3232 9200	0	2.0K	710	21.8M	3	0.0
75	▲ 5	AS174 Cogent Communications, LLC 🇺🇸 443 49443 3063 7775	0	2.7K	13	36.3M	207	0.0
76	▲ 5	AS16509 Amazon.com, Inc. 🇺🇸 443 8088 55555 83	0	12.5K	139	174.5M	90	0.0
77	▲ 2	AS9808 China Mobile Communications Group Co., Ltd 🇨🇳 3389 445 1433 8080	0	1.3K	79	37.0M	17	0.0

A network reaches the ranking once it sends at least 1000 probes from at least 10 distinct addresses and announces at least 256 addresses. The announced figure comes from the global BGP table, and AS0 is left out because it is not a real network.

Networks that run internet-wide scans for research and security carry a scanner tag. They reach the top because they cover a lot of ground from a small address footprint, which is expected behaviour rather than a sign of abuse, so you can hide them with the toggle above when you want to look at everything else.

The up and down arrows track each network's change in rank over the past 7 days, so a single busy hour doesn't bounce the whole table. They begin to fill in once the snapshots have built up a week of history.