Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 57195150 web servers by the ISPs' networks over which their traffic flows, the report provides a view of the top ISPs on the Internet.

ISP Domain Name	Apr 2011 Count*	Apr 2011 %	Mar 2011 Count*	Mar 2011 %	Growth %
theplanet.com	2,427,353	4.24	2,431,164	4.33	-2.07
schlund.de	1,736,908	3.04	1,727,884	3.08	-1.41
y.dns.jp	1,518,951	2.66	1,548,779	2.76	-3.81
secureserver.net	1,480,854	2.59	1,419,589	2.53	2.31
ovh.net	1,164,079	2.04	1,128,679	2.01	1.16
global-datacenter.com	1,110,458	1.94	1,057,111	1.88	3.03
your-server.de	986,383	1.72	952,687	1.70	1.55
a.in-addr.cn	854,997	1.49	833,057	1.49	0.66
rackspace.com	715,756	1.25	677,762	1.21	3.58
sakura.ad.jp	715,608	1.25	724,587	1.29	-3.14
lacnic.net	655,379	1.15	651,067	1.16	-1.27
bluehost.com	591,146	1.03	574,988	1.02	0.84
dreamhost.com	525,887	0.92	514,469	0.92	0.26
dns.kr	446,530	0.78	450,107	0.80	-2.70
a.dns.br	417,597	0.73	414,090	0.74	-1.09
softlayer.com	416,760	0.73	183,388	0.33	122.89
yourhostingaccount.com	409,955	0.72	403,373	0.72	-0.32
ntt.net	374,667	0.66	354,636	0.63	3.62
twnic.net	365,860	0.64	340,771	0.61	5.30
leaseweb.nl	365,860	0.64	337,829	0.60	6.22
peer1.net	347,414	0.61	350,265	0.62	-2.72
interq.or.jp	347,288	0.61	346,088	0.62	-1.58
guangzhou.gd.cn	335,627	0.59	340,545	0.61	-3.34
ns	331,480	0.58	330,389	0.59	-1.60
proxad.net	317,129	0.55	307,571	0.55	1.13
zjnbptt.net.cn	316,183	0.55	335,010	0.60	-7.43
pnap.net	305,945	0.53	328,093	0.58	-8.54
technorail.com	301,485	0.53	297,644	0.53	-0.65
hosteurope.de	297,094	0.52	283,792	0.51	2.68
amazon.com	291,755	0.51	279,336	0.50	2.44
level3.net	268,623	0.47	263,195	0.47	0.10
mediatemple.net	262,803	0.46	260,404	0.46	-1.02
localhost	259,042	0.45	256,499	0.46	-0.95
sta.net.cn	237,287	0.41	227,091	0.40	2.48
b-one-dns.net	233,930	0.41	229,473	0.41	-0.01
xlink.net	219,240	0.38	189,599	0.34	13.41
namespace4you.de	218,730	0.38	213,890	0.38	0.30
cogentco.com	218,071	0.38	222,065	0.40	-3.68
sourcedns.com	216,474	0.38	213,134	0.38	-0.38
dns.fz.fj.cn	210,187	0.37	190,429	0.34	8.26
nmc1.ptt.js.cn	210,129	0.37	198,170	0.35	4.00
iweb-hosting.com	207,184	0.36	196,039	0.35	3.66
kasserver.com	191,919	0.34	188,797	0.34	-0.30
intergenia.de	190,381	0.33	185,720	0.33	0.54
gtei.net	184,845	0.32	180,671	0.32	0.35
home.pl	182,836	0.32	176,281	0.31	1.73
burst.net	180,553	0.32	165,684	0.30	6.88
netart.pl	176,171	0.31	166,679	0.30	3.67
pri-dns.de	175,330	0.31	173,813	0.31	-1.06
savvis.net	170,828	0.30	163,803	0.29	2.29
yandex.ru	170,592	0.30	176,106	0.31	-4.99
masterhost.ru	164,434	0.29	160,246	0.29	0.64
singlehop.net	162,937	0.28	110,736	0.20	44.32
geodns.net	159,216	0.28	162,489	0.29	-3.90
usen.ad.jp	148,079	0.26	125,031	0.22	16.16
fasthosts.net.uk	146,912	0.26	147,222	0.26	-2.13
gnax.net	146,713	0.26	140,786	0.25	2.21
yahoo.com	146,602	0.26	146,958	0.26	-2.16
rz-ip.net	139,737	0.24	134,953	0.24	1.56
iprevolution.co.jp	138,662	0.24	132,829	0.24	2.39
lunarpages.com	137,694	0.24	136,676	0.24	-1.19
dimenoc.com	135,508	0.24	129,321	0.23	2.77
dion.ne.jp	134,003	0.23	131,035	0.23	0.30
secure.net	133,798	0.23	134,042	0.24	-2.10
bta.net.cn	130,030	0.23	120,196	0.21	6.10
mainnameserver.com	128,620	0.22	124,537	0.22	1.30
cais.com	125,462	0.22	98,581	0.18	24.82
gldn.net	124,652	0.22	125,007	0.22	-2.20
msft.net	123,930	0.22	106,147	0.19	14.51
carpathiahost.net	121,333	0.21	121,785	0.22	-2.28
uu.net	116,789	0.20	118,392	0.21	-3.25
sparqnet.net	113,628	0.20	102,908	0.18	8.30
ocn.ad.jp	112,720	0.20	106,429	0.19	3.88
ns01.idc.jp	111,166	0.19	112,525	0.20	-3.10
net.ru	110,030	0.19	104,413	0.19	3.36
servercentral.net	108,505	0.19	88,073	0.16	20.83
pair.com	105,493	0.18	104,643	0.19	-1.12
servint.com	105,447	0.18	112,271	0.20	-7.88
silkroadtechnologies.com	105,256	0.18	104,274	0.19	-1.00
jump.ro	101,910	0.18	104,693	0.19	-4.53
slicehost.net	101,815	0.18	84,630	0.15	18.00
pwebtech.com	100,620	0.18	107,584	0.19	-8.27
cncnet.net	100,235	0.18	117,919	0.21	-16.63
lnhi.net	100,158	0.18	109,691	0.20	-10.44
relax.ru	100,099	0.18	100,289	0.18	-2.11
att.net	99,723	0.17	95,896	0.17	1.99
google.com	98,406	0.17	65,100	0.12	48.26
gblx.net	97,640	0.17	87,180	0.16	9.85
untd.com	93,394	0.16	90,194	0.16	1.56
superhosting.cz	92,272	0.16	101,661	0.18	-10.98
he.net	91,122	0.16	100,914	0.18	-11.44
colt.net	91,024	0.16	89,771	0.16	-0.55
qwest.net	90,771	0.16	90,768	0.16	-1.92
netfirms.com	89,416	0.16	87,413	0.16	0.33
phatservers.com	89,359	0.16	131,805	0.23	-33.51
locaweb.com.br	89,255	0.16	87,449	0.16	0.11
kornet.net	87,965	0.15	93,495	0.17	-7.72
fhe3rz.net	87,153	0.15	117,453	0.21	-27.22
tfn.net.tw	87,044	0.15	86,666	0.15	-1.49
afrinic.net	86,456	0.15	85,856	0.15	-1.23
westmaster.com	84,775	0.15	87,219	0.16	-4.67
hananet.net	84,706	0.15	65,149	0.12	27.52
rt-comm.ru	84,132	0.15	83,362	0.15	-1.01
easpnet.com	83,747	0.15	27,066	0.05	203.48
flexwebhosting.nl	82,993	0.15	74,680	0.13	9.00
ripn.net	82,934	0.15	79,949	0.14	1.74
sdjnptt.net.cn	82,263	0.14	69,788	0.12	15.61
inetbone.net	81,943	0.14	86,548	0.15	-7.14
datadragon.net	81,731	0.14	95,493	0.17	-16.05
netdirekt.de	81,624	0.14	72,993	0.13	9.68
linode.com	80,138	0.14	69,099	0.12	13.75
nethost.cz	79,798	0.14	76,240	0.14	2.66
servidoresdns.net	78,415	0.14	77,830	0.14	-1.18
tele.dk	78,327	0.14	78,049	0.14	-1.57
rr.com	77,459	0.14	70,402	0.13	7.91
hc.ru	77,452	0.14	68,351	0.12	11.14
layeredtech.com	77,328	0.14	75,768	0.14	0.10
hinet.net	76,972	0.13	76,595	0.14	-1.44
sphere.ad.jp	76,930	0.13	77,325	0.14	-2.42
interware.hu	76,145	0.13	74,286	0.13	0.53
dnspartner.de	75,943	0.13	74,918	0.13	-0.58
meganameservers.com	75,786	0.13	75,388	0.13	-1.40
xs4all.nl	75,469	0.13	73,444	0.13	0.78
vpls.net	74,840	0.13	64,878	0.12	13.14
fastservers.net	74,789	0.13	71,570	0.13	2.49
uol.com.br	74,505	0.13	70,320	0.13	3.92
drcnet.com.cn	73,708	0.13	73,717	0.13	-1.93
ee.net	72,809	0.13	68,401	0.12	4.40
kei.pl	71,572	0.13	70,239	0.13	-0.06
viawest.net	71,048	0.12	47,625	0.08	46.32
aspadmin.com	69,882	0.12	75,984	0.14	-9.80
rain.fr	69,805	0.12	66,598	0.12	2.80
webcontrolcenter.com	69,491	0.12	69,691	0.12	-2.20
midphase.com	68,022	0.12	58,234	0.10	14.57
t-online.hu	66,418	0.12	73,951	0.13	-11.91
twtelecom.net	66,157	0.12	78,014	0.14	-16.83
casablanca.cz	65,852	0.12	64,845	0.12	-0.40
nocdirect.com	65,549	0.11	65,162	0.12	-1.34
gyron.net	65,375	0.11	63,978	0.11	0.22
dtag.de	64,579	0.11	73,321	0.13	-13.61
ctnt.com.cn	63,500	0.11	59,437	0.11	4.78
ch-meta.net	63,336	0.11	62,453	0.11	-0.53
hbwhptt.net.cn	63,141	0.11	59,884	0.11	3.41
intercom.com.cn	62,727	0.11	68,406	0.12	-10.06
dynamicweb.net	62,714	0.11	61,037	0.11	0.77
fdcservers.net	62,522	0.11	59,018	0.11	3.90
forpsi.net	61,855	0.11	60,612	0.11	0.09
namedserver.net	61,652	0.11	60,637	0.11	-0.28
servage.net	61,515	0.11	61,537	0.11	-1.95
maxim.net	61,151	0.11	62,791	0.11	-4.48
colo4dallas.net	59,850	0.10	59,395	0.11	-1.17
uk2.net	59,559	0.10	58,853	0.10	-0.74
ns1.xserver.jp	59,230	0.10	54,256	0.10	7.07
ucoz.net	58,775	0.10	58,587	0.10	-1.61
comcastbusiness.net	58,287	0.10	64,387	0.11	-11.21
spaceweb.ru	57,272	0.10	56,580	0.10	-0.72
sprintlink.net	56,983	0.10	56,494	0.10	-1.07
skyrock.net	56,626	0.10	68,576	0.12	-19.01
elinuxservers.com	56,013	0.10	56,737	0.10	-3.17
trellian.com	55,839	0.10	47,656	0.08	14.92
marchex.com	55,813	0.10	55,860	0.10	-2.00
cysonet.com	55,589	0.10	56,472	0.10	-3.45
wiredtree.com	55,578	0.10	53,279	0.09	2.31
inode.at	55,258	0.10	56,624	0.10	-4.29
deninet.hu	54,753	0.10	46,243	0.08	16.13
nic.ru	54,424	0.10	52,646	0.09	1.39
proserve.nl	53,938	0.09	51,922	0.09	1.89
inmotionhosting.com	53,739	0.09	51,517	0.09	2.31
ezzi.net	53,249	0.09	49,474	0.09	5.56
hbtele.com	52,622	0.09	85,152	0.15	-39.39
donhost.co.uk	51,972	0.09	51,851	0.09	-1.69
take2hosting.com	51,626	0.09	49,139	0.09	3.04
dn-s.nl	51,429	0.09	40,257	0.07	25.30
server260.com	50,635	0.09	48,527	0.09	2.34
tpt.net.cn	50,630	0.09	55,731	0.10	-10.90
rapidswitch.com	49,673	0.09	50,056	0.09	-2.67
as29550.net	49,469	0.09	45,801	0.08	5.93
gzidc.com	49,117	0.09	48,189	0.09	-0.03
pcextreme.nl	48,697	0.09	46,869	0.08	1.91
in2net.com	48,585	0.08	44,872	0.08	6.20
hesjptt.net.cn	47,908	0.08	46,953	0.08	0.08
sc163.net	47,692	0.08	61,736	0.11	-24.23
datapipe.net	46,900	0.08	47,592	0.08	-3.35
tpnet.pl	46,663	0.08	50,073	0.09	-8.60
bt.net	46,645	0.08	46,807	0.08	-2.26
singlehop.com	46,609	0.08	46,660	0.08	-2.03
eukhost.com	46,269	0.08	45,145	0.08	0.52
interlink.or.jp	46,110	0.08	43,663	0.08	3.58
myregisteredsite.com	46,004	0.08	39,999	0.07	12.80
sgns.net	45,938	0.08	44,677	0.08	0.85
quickline.ru	45,750	0.08	3,704	0.01	1111.44
demandmedia.com	45,742	0.08	47,907	0.09	-6.35
sivit.org	45,531	0.08	42,936	0.08	4.01
udagdns.net	45,061	0.08	42,862	0.08	3.11
surf-town.net	44,744	0.08	44,455	0.08	-1.28
datanet.hu	44,740	0.08	38,308	0.07	14.55
webnx.com	44,238	0.08	43,277	0.08	0.26
netbenefit.co.uk	43,995	0.08	43,421	0.08	-0.62
hazzptt.net.cn	43,893	0.08	43,887	0.08	-1.91
kidc.net	43,853	0.08	44,660	0.08	-3.69
infomaniak.ch	43,347	0.08	42,794	0.08	-0.65
transip.net	43,301	0.08	42,974	0.08	-1.17
cattelecom.com	43,094	0.08	41,293	0.07	2.36
isprime.com	42,986	0.08	43,719	0.08	-3.56
conepuppy.com	41,986	0.07	41,278	0.07	-0.24
ecotel.net	41,746	0.07	40,128	0.07	2.03
integraonline.com	41,333	0.07	28,127	0.05	44.13
acens.net	41,320	0.07	40,069	0.07	1.14
liquidweb.com	41,276	0.07	39,562	0.07	2.33
seeweb.it	41,216	0.07	40,320	0.07	0.26
xo.com	41,186	0.07	75,095	0.13	-46.21
bezeqint.net	40,888	0.07	49,224	0.09	-18.53
xl-internetservices.com	40,724	0.07	30,411	0.05	31.34
myhostcenter.com	40,707	0.07	40,129	0.07	-0.51
bell.ca	40,653	0.07	39,929	0.07	-0.14
hostpoint.ch	40,619	0.07	40,107	0.07	-0.67
iomart.com	40,473	0.07	40,425	0.07	-1.80
it.net	40,398	0.07	38,876	0.07	1.92
keyweb.de	40,353	0.07	39,613	0.07	-0.09
ns-px.online.sh.cn	39,980	0.07	39,900	0.07	-1.72
ns1	39,703	0.07	38,485	0.07	1.18
tucows.com	39,422	0.07	37,244	0.07	3.82
lambdanet.net	39,413	0.07	39,171	0.07	-1.31
telia.com	39,322	0.07	49,079	0.09	-21.42
limestonenetworks.com	39,185	0.07	38,003	0.07	1.13
webazilla.com	39,133	0.07	38,624	0.07	-0.63
oversee.net	39,130	0.07	33,730	0.06	13.78
servernap.com	39,095	0.07	38,959	0.07	-1.58
antagus.de	39,085	0.07	37,723	0.07	1.62
ispsystem.net	39,063	0.07	38,350	0.07	-0.10
west-datacenter.net	39,023	0.07	38,998	0.07	-1.86
attractsoft.com	38,827	0.07	30,284	0.05	25.75
drive.ne.jp	38,788	0.07	45,992	0.08	-17.28
live-servers.net	38,761	0.07	38,796	0.07	-2.01
sinnet.com.cn	38,354	0.07	34,721	0.06	8.34
calpop.com	37,865	0.07	45,830	0.08	-18.97
loopia.se	37,643	0.07	36,771	0.07	0.41
ahhfptt.net.cn	37,165	0.06	32,461	0.06	12.29
ipx-server.de	37,109	0.06	37,543	0.07	-3.05
webhosted.nl	37,059	0.06	32,990	0.06	10.18
cpi.ad.jp	36,671	0.06	36,247	0.06	-0.77
hoster.ru	36,619	0.06	45,262	0.08	-20.65
volia.com	36,432	0.06	30,317	0.05	17.86
infobox.org	36,061	0.06	35,385	0.06	-0.05
gadu-gadu.pl	35,963	0.06	33,498	0.06	5.30
virtualxs.com	35,775	0.06	30,795	0.05	13.94
advancedhosters.com	35,588	0.06	43,492	0.08	-19.74
hix.nl	35,493	0.06	34,843	0.06	-0.09
combell.net	35,304	0.06	35,063	0.06	-1.25
gandi.net	34,959	0.06	30,534	0.05	12.29

* An ISP is said to host a server if its name servers have control over the block of IP addresses that the server is in. Since a large ISP might delegate subnets to a smaller one, a single web server may be counted several times towards an ISP and its upstream providers.

Beginning with the February 2006 data set on which the March 1st, 2006 reports are based, a new algorithm was implemented for determining which webservers are assigned to which ISP. This new algorithm catches a significant number of servers which previously were unable to be assigned to an ISP.