Top organizations by IPv4 address space

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

Rank	Organization	IPv4 addresses	ASN count	Top ASNs
1	United States Department of Defense (DoD)	332 130 560	188	AS749 AS721 AS56 AS749: 224 165 632 \| AS721: 72 221 440 \| AS56: 7 759 616
2	Amazon.com Inc.	189 274 880	9	AS16509 AS14618 AS7224 AS16509: 169 151 232 \| AS14618: 20 093 440 \| AS7224: 27 648
3	China Telecom	116 030 720	228	AS4134 AS140292 AS140061 AS4134: 110 732 800 \| AS140292: 1 129 472 \| AS140061: 516 096
4	AT&T Enterprises LLC	106 929 664	42	AS7018 AS6389 AS20057 AS7018: 92 881 664 \| AS6389: 4 588 288 \| AS20057: 4 101 376
5	Verizon Business	106 268 928	73	AS701 AS22394 AS6167 AS701: 41 644 800 \| AS22394: 30 306 048 \| AS6167: 17 866 240
6	Comcast Cable Communications LLC	68 771 584	46	AS7922 AS20214 AS21508 AS7922: 68 164 352 \| AS20214: 136 192 \| AS21508: 71 424
7	Microsoft Corporation	67 335 424	19	AS8075 AS8070 AS3598 AS8075: 65 688 064 \| AS8070: 811 776 \| AS3598: 533 504
8	CHINA UNICOM China169 Backbone	57 697 280	1	AS4837 AS4837: 57 697 280
9	Korea Telecom	47 224 320	5	AS4766 AS45400 AS4040 AS4766: 47 198 720 \| AS45400: 25 344 \| AS4040: 256
10	China Mobile	43 470 848	7	AS9808 AS24444 AS24445 AS9808: 37 423 616 \| AS24444: 2 049 792 \| AS24445: 2 036 224
11	Charter Communications Inc	41 126 912	22	AS10796 AS20001 AS11427 AS10796: 7 727 872 \| AS20001: 7 201 792 \| AS11427: 5 827 840
12	SoftBank Corp.	40 116 480	3	AS17676 AS4725 AS17505 AS17676: 38 179 072 \| AS4725: 1 930 752 \| AS17505: 6 656
13	Cogent Communications LLC	35 902 720	21	AS174 AS4991 AS32068 AS174: 35 877 120 \| AS4991: 16 384 \| AS32068: 6 912
14	Level 3 Parent LLC	35 382 272	21	AS3356 AS3549 AS10753 AS3356: 29 404 416 \| AS3549: 5 030 912 \| AS10753: 559 104
15	Deutsche Telekom AG	34 210 304	5	AS3320 AS2773 AS2792 AS3320: 34 188 288 \| AS2773: 13 824 \| AS2792: 8 192
16	CenturyLink Communications LLC	31 653 888	36	AS209 AS3561 AS22561 AS209: 19 855 360 \| AS3561: 8 919 808 \| AS22561: 1 384 448
17	NTT DOCOMO BUSINESS Inc.	28 639 744	7	AS4713 AS38639 AS18072 AS4713: 28 623 872 \| AS38639: 13 312 \| AS18072: 1 280
18	Google LLC	25 203 200	15	AS396982 AS15169 AS19527 AS396982: 19 926 016 \| AS15169: 2 550 016 \| AS19527: 1 821 696
19	TELEFÔNICA BRASIL S.A	22 970 368	9	AS26599 AS27699 AS18881 AS26599: 11 693 056 \| AS27699: 4 645 632 \| AS18881: 4 616 192
20	Telecom Italia S.p.A.	22 859 520	8	AS3269 AS16232 AS20746 AS3269: 20 795 904 \| AS16232: 1 777 664 \| AS20746: 217 088
21	Orange S.A.	20 623 616	19	AS3215 AS5511 AS2278 AS3215: 20 046 848 \| AS5511: 431 360 \| AS2278: 98 560
22	KDDI CORPORATION	18 068 224	1	AS2516 AS2516: 18 068 224
23	SK Broadband Co Ltd	17 591 296	23	AS9318 AS17849 AS9689 AS9318: 15 286 528 \| AS17849: 313 344 \| AS9689: 291 840
24	China Education and Research Network Center	17 176 320	1	AS4538 AS4538: 17 176 320
25	British Telecommunications PLC	17 161 472	7	AS2856 AS6871 AS5400 AS2856: 13 824 256 \| AS6871: 2 097 664 \| AS5400: 708 608

Top organizations by IPv4 address space

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