Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 58278083 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	May 2011 Count*	May 2011 %	Apr 2011 Count*	Apr 2011 %	Growth %
theplanet.com	2,380,348	4.08	2,427,353	4.24	-3.76
schlund.de	1,752,419	3.01	1,736,908	3.04	-0.98
secureserver.net	1,484,028	2.55	1,480,854	2.59	-1.65
y.dns.jp	1,463,689	2.51	1,518,951	2.66	-5.43
global-datacenter.com	1,273,941	2.19	1,110,458	1.94	12.59
ovh.net	1,172,335	2.01	1,164,079	2.04	-1.16
your-server.de	998,828	1.71	986,383	1.72	-0.62
sakura.ad.jp	897,385	1.54	715,608	1.25	23.07
a.in-addr.cn	860,815	1.48	854,997	1.49	-1.19
rackspace.com	726,424	1.25	715,756	1.25	-0.40
lacnic.net	667,361	1.15	655,379	1.15	-0.06
bluehost.com	606,489	1.04	591,146	1.03	0.69
dreamhost.com	529,975	0.91	525,887	0.92	-1.10
softlayer.com	501,676	0.86	416,760	0.73	18.14
yourhostingaccount.com	434,648	0.75	409,955	0.72	4.05
1and1.com	423,882	0.73	29,481	0.05	1311.10
a.dns.br	423,259	0.73	417,597	0.73	-0.53
twnic.net	421,163	0.72	365,860	0.64	12.98
dns.kr	418,635	0.72	446,530	0.78	-7.99
ntt.net	379,648	0.65	374,667	0.66	-0.55
leaseweb.nl	355,017	0.61	365,860	0.64	-4.77
peer1.net	348,268	0.60	347,414	0.61	-1.62
zjnbptt.net.cn	347,449	0.60	316,183	0.55	7.85
ns	342,427	0.59	331,480	0.58	1.38
guangzhou.gd.cn	341,192	0.59	335,627	0.59	-0.23
interq.or.jp	326,879	0.56	347,288	0.61	-7.63
amazon.com	319,371	0.55	291,755	0.51	7.43
proxad.net	318,949	0.55	317,129	0.55	-1.29
technorail.com	303,192	0.52	301,485	0.53	-1.30
hosteurope.de	300,941	0.52	297,094	0.52	-0.59
pnap.net	283,446	0.49	305,945	0.53	-9.08
level3.net	271,801	0.47	268,623	0.47	-0.70
mediatemple.net	269,571	0.46	262,803	0.46	0.67
localhost	254,871	0.44	259,042	0.45	-3.44
sta.net.cn	245,776	0.42	237,287	0.41	1.65
b-one-dns.net	236,053	0.41	233,930	0.41	-0.97
cogentco.com	229,083	0.39	218,071	0.38	3.10
sourcedns.com	222,495	0.38	216,474	0.38	0.87
namespace4you.de	220,985	0.38	218,730	0.38	-0.85
dns.fz.fj.cn	209,153	0.36	210,187	0.37	-2.34
xlink.net	205,502	0.35	219,240	0.38	-8.01
iweb-hosting.com	197,576	0.34	207,184	0.36	-6.41
intergenia.de	195,961	0.34	190,381	0.33	1.02
burst.net	195,281	0.34	180,553	0.32	6.15
kasserver.com	193,946	0.33	191,919	0.34	-0.82
home.pl	193,804	0.33	182,836	0.32	4.03
nmc1.ptt.js.cn	192,223	0.33	210,129	0.37	-10.22
gtei.net	187,773	0.32	184,845	0.32	-0.30
yandex.ru	174,511	0.30	170,592	0.30	0.40
savvis.net	174,192	0.30	170,828	0.30	0.07
pri-dns.de	172,994	0.30	175,330	0.31	-3.17
singlehop.net	171,520	0.29	162,937	0.28	3.31
netart.pl	167,973	0.29	176,171	0.31	-6.43
geodns.net	164,450	0.28	159,216	0.28	1.37
masterhost.ru	161,552	0.28	164,434	0.29	-3.58
bta.net.cn	148,232	0.25	130,030	0.23	11.88
rz-ip.net	147,284	0.25	139,737	0.24	3.44
fasthosts.net.uk	146,840	0.25	146,912	0.26	-1.91
sparqnet.net	144,827	0.25	113,628	0.20	25.09
gnax.net	142,405	0.24	146,713	0.26	-4.74
dion.ne.jp	138,827	0.24	134,003	0.23	1.67
lunarpages.com	138,034	0.24	137,694	0.24	-1.62
dimenoc.com	137,448	0.24	135,508	0.24	-0.45
gldn.net	135,532	0.23	124,652	0.22	6.71
secure.net	135,158	0.23	133,798	0.23	-0.86
mainnameserver.com	131,104	0.22	128,620	0.22	0.04
carpathiahost.net	129,749	0.22	121,333	0.21	4.95
yahoo.com	128,913	0.22	146,602	0.26	-13.70
msft.net	119,935	0.21	123,930	0.22	-5.02
servercentral.net	119,108	0.20	108,505	0.19	7.73
uu.net	115,271	0.20	116,789	0.20	-3.13
ns01.idc.jp	113,465	0.19	111,166	0.19	0.17
jump.ro	113,215	0.19	101,910	0.18	9.03
ocn.ad.jp	112,976	0.19	112,720	0.20	-1.64
relax.ru	111,341	0.19	100,099	0.18	9.16
he.net	111,198	0.19	91,122	0.16	19.76
net.ru	110,043	0.19	110,030	0.19	-1.85
cais.com	110,006	0.19	125,462	0.22	-13.95
phatservers.com	109,763	0.19	89,359	0.16	20.55
slicehost.net	109,082	0.19	101,815	0.18	5.15
fhe3rz.net	107,765	0.18	87,153	0.15	21.35
servint.com	107,346	0.18	105,447	0.18	-0.09
pwebtech.com	107,121	0.18	100,620	0.18	4.48
cncnet.net	106,164	0.18	100,235	0.18	3.95
pair.com	105,196	0.18	105,493	0.18	-2.13
superhosting.cz	102,318	0.18	92,272	0.16	8.83
silkroadtechnologies.com	102,219	0.18	105,256	0.18	-4.69
iprevolution.co.jp	101,582	0.17	138,662	0.24	-28.10
lnhi.net	100,868	0.17	100,158	0.18	-1.16
tfn.net.tw	100,521	0.17	87,044	0.15	13.34
untd.com	95,282	0.16	93,394	0.16	0.13
usen.ad.jp	94,780	0.16	148,079	0.26	-37.18
att.net	94,138	0.16	99,723	0.17	-7.35
easpnet.com	93,139	0.16	83,747	0.15	9.15
linode.com	92,981	0.16	80,138	0.14	13.87
westmaster.com	92,787	0.16	84,775	0.15	7.42
gblx.net	92,099	0.16	97,640	0.17	-7.43
qwest.net	92,068	0.16	90,771	0.16	-0.46
locaweb.com.br	90,297	0.15	89,255	0.16	-0.71
flexwebhosting.nl	87,804	0.15	82,993	0.15	3.83
afrinic.net	87,738	0.15	86,456	0.15	-0.40
kornet.net	85,934	0.15	87,965	0.15	-4.12
ripn.net	84,313	0.14	82,934	0.15	-0.23
colt.net	84,089	0.14	91,024	0.16	-9.34
inetbone.net	83,020	0.14	81,943	0.14	-0.57
netdirekt.de	82,830	0.14	81,624	0.14	-0.41
nethost.cz	82,127	0.14	79,798	0.14	1.01
vpls.net	81,401	0.14	74,840	0.13	6.75
hbtele.com	80,940	0.14	52,622	0.09	50.96
rr.com	80,373	0.14	77,459	0.14	1.83
sdjnptt.net.cn	78,840	0.14	82,263	0.14	-5.94
servidoresdns.net	78,778	0.14	78,415	0.14	-1.40
hc.ru	78,768	0.14	77,452	0.14	-0.19
layeredtech.com	78,262	0.13	77,328	0.14	-0.67
tele.dk	77,742	0.13	78,327	0.14	-2.59
hinet.net	77,253	0.13	76,972	0.13	-1.50
netfirms.com	76,566	0.13	89,416	0.16	-15.96
interware.hu	76,553	0.13	76,145	0.13	-1.33
xs4all.nl	76,402	0.13	75,469	0.13	-0.64
datadragon.net	76,361	0.13	81,731	0.14	-8.31
dnspartner.de	76,329	0.13	75,943	0.13	-1.36
fastservers.net	75,994	0.13	74,789	0.13	-0.28
twtelecom.net	75,958	0.13	66,157	0.12	12.68
meganameservers.com	75,797	0.13	75,786	0.13	-1.84
rt-comm.ru	75,605	0.13	84,132	0.15	-11.81
sphere.ad.jp	75,602	0.13	76,930	0.13	-3.55
drcnet.com.cn	75,396	0.13	73,708	0.13	0.39
aspadmin.com	75,291	0.13	69,882	0.12	5.74
uol.com.br	73,210	0.13	74,505	0.13	-3.56
rain.fr	72,264	0.12	69,805	0.12	1.60
kei.pl	72,091	0.12	71,572	0.13	-1.15
google.com	71,386	0.12	98,406	0.17	-28.81
maxim.net	71,227	0.12	61,151	0.11	14.31
hananet.net	70,809	0.12	84,706	0.15	-17.96
webcontrolcenter.com	69,072	0.12	69,491	0.12	-2.45
dtag.de	67,532	0.12	64,579	0.11	2.63
t-online.hu	67,506	0.12	66,418	0.12	-0.25
nocdirect.com	67,170	0.12	65,549	0.11	0.57
fdcservers.net	66,636	0.11	62,522	0.11	4.60
gyron.net	66,075	0.11	65,375	0.11	-0.81
casablanca.cz	65,275	0.11	65,852	0.12	-2.72
wiredtree.com	65,114	0.11	55,578	0.10	14.98
intercom.com.cn	64,478	0.11	62,727	0.11	0.88
ee.net	64,313	0.11	72,809	0.13	-13.31
trellian.com	64,250	0.11	55,839	0.10	12.92
ch-meta.net	64,036	0.11	63,336	0.11	-0.77
colo4dallas.net	64,029	0.11	59,850	0.10	4.99
dynamicweb.net	63,736	0.11	62,714	0.11	-0.26
ucoz.net	62,842	0.11	58,775	0.10	4.93
ns1.xserver.jp	62,360	0.11	59,230	0.10	3.33
namedserver.net	62,359	0.11	61,652	0.11	-0.73
xo.com	62,051	0.11	41,186	0.07	47.86
sc163.net	61,556	0.11	47,692	0.08	26.67
servage.net	61,551	0.11	61,515	0.11	-1.80
forpsi.net	60,901	0.10	61,855	0.11	-3.37
comcastbusiness.net	59,396	0.10	58,287	0.10	0.01
uk2.net	59,360	0.10	59,559	0.10	-2.19
spaceweb.ru	58,941	0.10	57,272	0.10	1.00
cysonet.com	58,749	0.10	55,589	0.10	3.72
midphase.com	57,590	0.10	68,022	0.12	-16.91
sprintlink.net	57,113	0.10	56,983	0.10	-1.63
deninet.hu	56,394	0.10	54,753	0.10	1.08
inmotionhosting.com	56,255	0.10	53,739	0.09	2.74
ctnt.com.cn	56,116	0.10	63,500	0.11	-13.27
elinuxservers.com	56,077	0.10	56,013	0.10	-1.75
proserve.nl	56,070	0.10	53,938	0.09	2.02
nic.ru	55,606	0.10	54,424	0.10	0.27
inode.at	55,356	0.09	55,258	0.10	-1.68
marchex.com	55,050	0.09	55,813	0.10	-3.20
hbwhptt.net.cn	54,651	0.09	63,141	0.11	-15.05
dn-s.nl	54,636	0.09	51,429	0.09	4.26
donhost.co.uk	51,968	0.09	51,972	0.09	-1.87
take2hosting.com	51,356	0.09	51,626	0.09	-2.37
server260.com	50,851	0.09	50,635	0.09	-1.44
hesjptt.net.cn	49,604	0.09	47,908	0.08	1.62
pcextreme.nl	49,528	0.08	48,697	0.09	-0.18
as29550.net	49,367	0.08	49,469	0.09	-2.06
ns-px.online.sh.cn	49,225	0.08	39,980	0.07	20.84
gzidc.com	48,729	0.08	49,117	0.09	-2.63
kidc.net	48,454	0.08	43,853	0.08	8.44
myregisteredsite.com	48,134	0.08	46,004	0.08	2.69
rapidswitch.com	48,089	0.08	49,673	0.09	-4.99
datanet.hu	47,709	0.08	44,740	0.08	4.65
interlink.or.jp	47,511	0.08	46,110	0.08	1.12
datapipe.net	47,409	0.08	46,900	0.08	-0.79
webnx.com	47,383	0.08	44,238	0.08	5.12
in2net.com	47,306	0.08	48,585	0.08	-4.44
tpnet.pl	47,216	0.08	46,663	0.08	-0.70
ns1	47,137	0.08	39,703	0.07	16.52
sivit.org	46,947	0.08	45,531	0.08	1.19
bt.net	46,744	0.08	46,645	0.08	-1.65
singlehop.com	46,641	0.08	46,609	0.08	-1.79
eukhost.com	46,587	0.08	46,269	0.08	-1.18
isprime.com	46,475	0.08	42,986	0.08	6.11
sgns.net	46,064	0.08	45,938	0.08	-1.59
tpt.net.cn	45,959	0.08	50,630	0.09	-10.91
viawest.net	45,191	0.08	71,048	0.12	-37.58
surf-town.net	44,991	0.08	44,744	0.08	-1.32
telia.com	44,888	0.08	39,322	0.07	12.03
xl-internetservices.com	44,707	0.08	40,724	0.07	7.74
bezeqint.net	44,579	0.08	40,888	0.07	7.00
hazzptt.net.cn	44,501	0.08	43,893	0.08	-0.50
netbenefit.co.uk	44,278	0.08	43,995	0.08	-1.23
demandmedia.com	44,231	0.08	45,742	0.08	-5.10
lambdanet.net	44,069	0.08	39,413	0.07	9.74
infomaniak.ch	43,676	0.07	43,347	0.08	-1.11
skyrock.net	43,629	0.07	56,626	0.10	-24.38
cattelecom.com	43,621	0.07	43,094	0.08	-0.66
sinnet.com.cn	43,429	0.07	38,354	0.07	11.13
conepuppy.com	43,398	0.07	41,986	0.07	1.44
transip.net	43,384	0.07	43,301	0.08	-1.67
hoster.ru	43,363	0.07	36,619	0.06	16.22
mastak.ru	43,125	0.07	689	0.00	6042.76
grafix-is.com	42,824	0.07	34,504	0.06	21.81
ezzi.net	42,736	0.07	53,249	0.09	-21.23
drive.ne.jp	42,364	0.07	38,788	0.07	7.19
ecotel.net	42,338	0.07	41,746	0.07	-0.47
advancedhosters.com	42,292	0.07	35,588	0.06	16.63
seeweb.it	42,117	0.07	41,216	0.07	0.29
keyweb.de	41,240	0.07	40,353	0.07	0.30
integraonline.com	41,117	0.07	41,333	0.07	-2.37
hostpoint.ch	41,007	0.07	40,619	0.07	-0.92
dnscloud.com	40,970	0.07	34,768	0.06	15.65
bell.ca	40,954	0.07	40,653	0.07	-1.13
webazilla.com	40,573	0.07	39,133	0.07	1.75
iomart.com	40,558	0.07	40,473	0.07	-1.65
amerinoc.com	40,483	0.07	31,822	0.06	24.85
myhostcenter.com	40,393	0.07	40,707	0.07	-2.62
loopia.se	40,280	0.07	37,643	0.07	5.02
antagus.de	39,989	0.07	39,085	0.07	0.41
limestonenetworks.com	39,965	0.07	39,185	0.07	0.10
tucows.com	39,819	0.07	39,422	0.07	-0.87
calpop.com	39,763	0.07	37,865	0.07	3.06
liquidweb.com	39,564	0.07	41,276	0.07	-5.93
ispsystem.net	39,147	0.07	39,063	0.07	-1.65
live-servers.net	38,887	0.07	38,761	0.07	-1.54
volia.com	38,447	0.07	36,432	0.06	3.57
ahhfptt.net.cn	38,424	0.07	37,165	0.06	1.47
west-datacenter.net	38,293	0.07	39,023	0.07	-3.69
virtualxs.com	38,202	0.07	35,775	0.06	4.80
servernap.com	37,858	0.06	39,095	0.07	-4.96
caravan.ru	37,773	0.06	34,047	0.06	8.88
cpi.ad.jp	37,678	0.06	36,671	0.06	0.84
gandi.net	37,469	0.06	34,959	0.06	5.19
zzidc.com	37,426	0.06	31,829	0.06	15.40
southwebventures.com	36,291	0.06	33,126	0.06	7.52
bhpr.net	36,284	0.06	30,322	0.05	17.44
infobox.org	35,909	0.06	36,061	0.06	-2.27
homestead.com	35,864	0.06	30,062	0.05	17.08
ntdns.de	35,768	0.06	34,752	0.06	1.01

* 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.