Top ASNs by IPv4 address space

List of countries by IPv4 allocation Top ASNs by IPv4 Top ASNs by IPv6 Top orgs by IPv4

Rank	ASN	Organization	IPv4 addresses	Related ASNs
1	AS749	United States Department of Defense (DoD)	224 166 912	AS721 AS56 AS367
2	AS16509	Amazon.com Inc.	168 578 816	AS14618 AS7224 AS36263
3	AS4134	China Telecom	110 732 800	AS140292 AS140061 AS140308
4	AS7018	AT&T Enterprises LLC	92 883 712	AS6389 AS20057 AS2686
5	AS721	United States Department of Defense (DoD)	72 229 632	AS749 AS56 AS367
6	AS7922	Comcast Cable Communications LLC	68 058 624	AS33542 AS53297 AS393232
7	AS8075	Microsoft Corporation	65 679 616	AS8070 AS3598 AS8069
8	AS4837	CHINA UNICOM China169 Backbone	57 712 896	N/A
9	AS4766	Korea Telecom	47 192 320	AS45400 AS4040 AS3559
10	AS701	Verizon Business	41 417 728	AS22394 AS6167 AS2828
11	AS17676	SoftBank Corp.	38 060 288	AS4725 AS17505
12	AS9808	China Mobile	37 424 384	AS24444 AS24445 AS24400
13	AS174	Cogent Communications LLC	35 919 872	AS4991 AS32068 AS1790
14	AS3320	Deutsche Telekom AG	34 206 720	AS2773 AS2792 AS2777
15	AS22394	Verizon Business	30 306 048	AS701 AS6167 AS2828
16	AS3356	Level 3 Parent LLC	29 472 256	AS3549 AS10753 AS18756
17	AS4713	NTT DOCOMO BUSINESS Inc.	28 624 896	AS38639 AS18072 AS37900
18	AS3269	Telecom Italia S.p.A.	20 795 904	AS16232 AS20746 AS5609
19	AS3215	Orange S.A.	20 070 400	AS5511 AS2278 AS2280
20	AS396982	Google LLC	19 891 200	AS15169 AS19527 AS394089
21	AS209	CenturyLink Communications LLC	19 864 576	AS3561 AS22561 AS2379
22	AS14618	Amazon.com Inc.	19 455 744	AS16509 AS7224 AS36263
23	AS2516	KDDI CORPORATION	18 034 944	N/A
24	AS714	Apple Inc.	17 990 144	AS6185
25	AS6167	Verizon Business	17 377 792	AS701 AS22394 AS2828

Top ASNs by IPv4 addresses