Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 38833207 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 2009 Count*	May 2009 %	Apr 2009 Count*	Apr 2009 %	Growth %
theplanet.com	1,369,854	3.53	1,392,405	3.56	-0.78
schlund.de	1,344,492	3.46	1,351,701	3.45	0.31
y.dns.jp	1,073,529	2.76	1,080,690	2.76	0.18
secureserver.net	824,243	2.12	821,098	2.10	1.24
sakura.ad.jp	571,213	1.47	569,379	1.45	1.17
ovh.net	538,534	1.39	537,698	1.37	1.01
a.in-addr.cn	530,306	1.37	529,256	1.35	1.05
softlayer.com	508,282	1.31	518,853	1.32	-1.21
lacnic.net	441,507	1.14	446,664	1.14	-0.31
rackspace.com	434,204	1.12	432,000	1.10	1.36
ev1servers.net	427,890	1.10	429,184	1.10	0.55
fc2.com	388,531	1.00	387,907	0.99	1.01
your-server.de	388,285	1.00	407,830	1.04	-3.98
ntt.net	345,142	0.89	348,605	0.89	-0.15
dreamhost.com	344,861	0.89	336,626	0.86	3.32
dns.kr	299,636	0.77	312,096	0.80	-3.18
yourhostingaccount.com	291,162	0.75	290,691	0.74	1.01
peer1.net	282,632	0.73	282,142	0.72	1.02
a.dns.br	277,915	0.72	279,840	0.71	0.16
bluehost.com	277,087	0.71	276,997	0.71	0.88
cogentco.com	259,802	0.67	255,092	0.65	2.71
guangzhou.gd.cn	250,203	0.64	256,496	0.65	-1.62
proxad.net	238,759	0.61	239,285	0.61	0.63
technorail.com	229,770	0.59	230,854	0.59	0.38
leaseweb.nl	204,315	0.53	202,644	0.52	1.68
zjnbptt.net.cn	187,240	0.48	183,424	0.47	2.95
gnax.net	176,223	0.45	176,644	0.45	0.61
localhost	159,046	0.41	161,074	0.41	-0.42
twnic.net	157,336	0.41	161,802	0.41	-1.93
pnap.net	155,020	0.40	162,850	0.42	-4.00
hosteurope.de	154,803	0.40	155,516	0.40	0.39
nmc1.ptt.js.cn	149,738	0.39	154,054	0.39	-1.98
sourcedns.com	149,277	0.38	149,501	0.38	0.70
sta.net.cn	145,718	0.38	145,343	0.37	1.11
uu.net	145,190	0.37	146,546	0.37	-0.08
namespace4you.de	143,082	0.37	143,107	0.37	0.83
mediatemple.net	139,075	0.36	138,119	0.35	1.55
usen.ad.jp	138,264	0.36	139,086	0.36	0.25
pri-dns.de	135,123	0.35	135,480	0.35	0.58
rz-ip.net	134,774	0.35	134,854	0.34	0.79
savvis.net	133,506	0.34	132,903	0.34	1.31
fasthosts.net.uk	132,981	0.34	133,506	0.34	0.45
fhe3rz.net	131,679	0.34	126,832	0.32	4.70
yandex.ru	128,649	0.33	128,629	0.33	0.87
att.net	128,465	0.33	130,002	0.33	-0.34
interq.or.jp	124,854	0.32	124,532	0.32	1.11
b-one-dns.net	122,636	0.32	122,829	0.31	0.69
masterhost.ru	122,418	0.32	123,887	0.32	-0.35
iweb-hosting.com	121,900	0.31	126,951	0.32	-3.16
kasserver.com	120,714	0.31	120,265	0.31	1.23
intergenia.de	120,346	0.31	120,084	0.31	1.07
secure.net	119,899	0.31	119,473	0.31	1.21
home.pl	118,688	0.31	25,353	0.06	372.12
geodns.net	115,297	0.30	123,237	0.31	-5.65
bluegravity.com	111,948	0.29	111,956	0.29	0.84
xlink.net	111,126	0.29	111,152	0.28	0.83
lunarpages.com	108,695	0.28	108,549	0.28	0.99
cncnet.net	108,448	0.28	119,283	0.30	-8.31
level3.net	104,908	0.27	112,211	0.29	-5.71
layeredtech.com	104,229	0.27	101,009	0.26	4.06
abac.com	101,333	0.26	100,323	0.26	1.86
ns	97,347	0.25	96,232	0.25	2.02
pair.com	96,033	0.25	96,360	0.25	0.51
dion.ne.jp	94,982	0.24	94,545	0.24	1.32
ocn.ad.jp	94,662	0.24	94,479	0.24	1.04
qwest.net	94,243	0.24	94,783	0.24	0.27
msft.net	93,678	0.24	93,603	0.24	0.93
dimenoc.com	92,420	0.24	93,712	0.24	-0.54
ev1.net	91,078	0.23	87,113	0.22	5.44
yahoo.com	87,656	0.23	87,098	0.22	1.50
ns01.idc.jp	86,414	0.22	88,010	0.22	-0.98
bta.net.cn	86,100	0.22	86,376	0.22	0.53
lnhi.net	84,826	0.22	84,889	0.22	0.77
webcontrolcenter.com	82,217	0.21	83,490	0.21	-0.69
pwebtech.com	80,333	0.21	83,421	0.21	-2.88
net.ru	79,370	0.20	76,711	0.20	4.35
netart.pl	79,161	0.20	79,560	0.20	0.34
untd.com	79,013	0.20	79,168	0.20	0.65
proserve.nl	77,465	0.20	77,603	0.20	0.67
rain.fr	75,464	0.19	75,741	0.19	0.48
nac.net	75,001	0.19	79,608	0.20	-4.99
sparqnet.net	74,604	0.19	78,219	0.20	-3.81
tele.dk	74,402	0.19	71,449	0.18	5.02
sprintlink.net	73,395	0.19	73,004	0.19	1.39
twtelecom.net	72,609	0.19	74,212	0.19	-1.33
superhosting.cz	72,329	0.19	72,088	0.18	1.19
sdjnptt.net.cn	71,409	0.18	70,793	0.18	1.73
dns.fz.fj.cn	71,241	0.18	109,047	0.28	-34.11
meganameservers.com	69,280	0.18	69,666	0.18	0.29
ultradns.net	68,999	0.18	66,759	0.17	4.23
fastservers.net	68,972	0.18	70,831	0.18	-1.80
dnspro.de	66,388	0.17	65,518	0.17	2.19
pochta.ru	64,544	0.17	64,542	0.16	0.85
afrinic.net	64,478	0.17	64,827	0.17	0.31
rr.com	63,856	0.16	61,098	0.16	5.40
inetbone.net	63,595	0.16	63,430	0.16	1.11
sphere.ad.jp	63,413	0.16	63,377	0.16	0.91
servint.com	63,239	0.16	71,242	0.18	-10.48
tpnet.pl	62,635	0.16	60,678	0.15	4.10
hostlab.nl	62,370	0.16	63,659	0.16	-1.19
servage.net	62,188	0.16	70,642	0.18	-11.22
dtag.de	60,469	0.16	60,818	0.16	0.27
hananet.net	59,832	0.15	63,747	0.16	-5.34
servidoresdns.net	59,315	0.15	59,703	0.15	0.19
scservers.com	58,118	0.15	64,858	0.17	-9.63
phatservers.com	57,350	0.15	64,697	0.17	-10.60
xs4all.nl	56,064	0.14	56,280	0.14	0.46
rapidswitch.com	55,872	0.14	53,502	0.14	5.32
mainnameserver.com	55,692	0.14	54,730	0.14	2.62
hostway.net	54,508	0.14	55,165	0.14	-0.35
silkroadtechnologies.com	54,496	0.14	55,372	0.14	-0.75
iprevolution.co.jp	54,257	0.14	54,307	0.14	0.76
rt-comm.ru	54,223	0.14	55,096	0.14	-0.75
kornet.net	54,091	0.14	50,665	0.13	7.67
burst.net	53,465	0.14	53,517	0.14	0.75
inode.at	53,424	0.14	53,403	0.14	0.89
maxim.net	53,158	0.14	53,074	0.14	1.01
aspadmin.com	52,153	0.13	51,477	0.13	2.17
interware.hu	51,990	0.13	51,834	0.13	1.15
sivit.org	51,512	0.13	51,984	0.13	-0.07
isprime.com	51,284	0.13	54,851	0.14	-5.71
colt.net	50,727	0.13	51,383	0.13	-0.44
cnc-idc.com	50,523	0.13	55,538	0.14	-8.26
ctnt.com.cn	50,492	0.13	68,807	0.18	-25.99
ieurop.net	50,104	0.13	53,517	0.14	-5.58
elinuxservers.com	49,382	0.13	49,640	0.13	0.33
integraonline.com	49,334	0.13	49,880	0.13	-0.25
hc.ru	48,358	0.12	48,480	0.12	0.60
hinet.net	48,338	0.12	48,111	0.12	1.33
sc163.net	48,127	0.12	49,098	0.13	-1.14
cnmobile.net	48,099	0.12	49,037	0.13	-1.08
in2net.com	47,734	0.12	48,126	0.12	0.03
dnspartner.de	47,577	0.12	47,645	0.12	0.71
forpsi.net	47,159	0.12	47,278	0.12	0.60
telecity.net	47,115	0.12	60,067	0.15	-20.90
gblx.net	46,349	0.12	52,873	0.14	-11.59
switchnap.com	46,010	0.12	45,930	0.12	1.03
he.net	45,678	0.12	50,663	0.13	-9.07
dynamicweb.net	45,360	0.12	44,429	0.11	2.96
ipx-server.de	44,678	0.12	44,971	0.11	0.19
casablanca.cz	44,625	0.11	45,868	0.12	-1.88
tpt.net.cn	44,220	0.11	44,906	0.11	-0.69
datapipe.net	43,245	0.11	43,543	0.11	0.16
kei.pl	42,834	0.11	42,750	0.11	1.05
webfusion.co.uk	42,595	0.11	37,401	0.10	14.85
donhost.co.uk	42,277	0.11	42,235	0.11	0.95
interlink.or.jp	41,946	0.11	41,377	0.11	2.24
hbwhptt.net.cn	41,938	0.11	42,635	0.11	-0.80
ensynch.com	41,886	0.11	39,940	0.10	5.76
colo4dallas.net	41,856	0.11	41,711	0.11	1.20
telia.com	41,411	0.11	40,474	0.10	3.18
xo.com	40,888	0.11	39,930	0.10	3.27
amenworld.com	40,844	0.11	41,323	0.11	-0.32
clara.net	40,559	0.10	41,370	0.11	-1.13
steadfast.net	40,540	0.10	41,450	0.11	-1.36
ch-meta.net	40,432	0.10	40,437	0.10	0.84
ahhfptt.net.cn	39,825	0.10	39,718	0.10	1.12
netbenefit.co.uk	39,244	0.10	38,956	0.10	1.60
keyweb.de	39,029	0.10	38,390	0.10	2.53
asahi-net.or.jp	38,935	0.10	38,777	0.10	1.26
gyron.net	38,882	0.10	38,855	0.10	0.92
t-online.hu	38,695	0.10	38,816	0.10	0.54
locaweb.com.br	38,644	0.10	38,460	0.10	1.33
liquidweb.com	38,177	0.10	38,510	0.10	-0.02
38.113.184.1	37,927	0.10	438	0.00	8632.70
cais.com	37,906	0.10	100,001	0.26	-61.77
uk2.net	37,184	0.10	37,139	0.09	0.97
west-datacenter.net	36,949	0.10	37,183	0.09	0.21
datadragon.net	36,546	0.09	41,492	0.11	-11.17
namedserver.net	36,538	0.09	36,608	0.09	0.66
carpathiahost.net	36,351	0.09	36,552	0.09	0.29
google.com	36,076	0.09	34,170	0.09	6.47
dns1.fz.fj.cn	35,927	0.09	4,581	0.01	690.92
server260.com	35,681	0.09	35,348	0.09	1.80
inet.it	35,117	0.09	35,398	0.09	0.05
calpop.com	35,086	0.09	35,295	0.09	0.25
activeisp.com	35,057	0.09	35,244	0.09	0.31
dn.net	35,037	0.09	35,162	0.09	0.49
fdcservers.net	34,984	0.09	34,931	0.09	1.00
servepath.com	34,979	0.09	35,590	0.09	-0.88
alibabaonline.com	34,466	0.09	34,268	0.09	1.43
ripn.net	34,464	0.09	34,771	0.09	-0.04
westmaster.com	34,422	0.09	34,681	0.09	0.10
ee.net	34,293	0.09	32,608	0.08	6.06
gzidc.com	34,253	0.09	34,403	0.09	0.41
inet.co.th	34,209	0.09	29,487	0.08	17.00
intercom.com.cn	34,194	0.09	34,191	0.09	0.86
iomart.com	33,474	0.09	33,609	0.09	0.44
sgns.net	33,248	0.09	6,956	0.02	382.04
myregisteredsite.com	33,068	0.09	32,731	0.08	1.89
alabanza.com	32,792	0.08	34,852	0.09	-5.11
cysonet.com	32,713	0.08	32,852	0.08	0.42
superb.net	32,364	0.08	33,280	0.08	-1.93
jump.ro	32,143	0.08	30,664	0.08	5.71
interbusiness.it	31,896	0.08	32,259	0.08	-0.29
widexs.nl	31,656	0.08	34,078	0.09	-6.32
netnation.com	31,431	0.08	31,584	0.08	0.36
inflow.net	31,253	0.08	31,447	0.08	0.23
bt.net	31,226	0.08	31,862	0.08	-1.16
hm23	30,960	0.08	31,241	0.08	-0.06
rackforce.com	30,824	0.08	31,517	0.08	-1.37
uol.com.br	30,782	0.08	30,199	0.08	2.80
noc4hosts.com	30,497	0.08	30,445	0.08	1.02
akamai.com	30,494	0.08	23,393	0.06	31.46
gxn.net	30,326	0.08	35,268	0.09	-13.28
sagonet.com	30,093	0.08	30,193	0.08	0.52
hesjptt.net.cn	29,911	0.08	29,821	0.08	1.15
voxel.net	29,714	0.08	27,598	0.07	8.58
gldn.net	29,597	0.08	29,806	0.08	0.14
datanet.hu	29,477	0.08	29,575	0.08	0.52
relcom.ru	29,058	0.07	29,641	0.08	-1.13
infomaniak.ch	28,903	0.07	29,016	0.07	0.46
comcastbusiness.net	28,805	0.07	27,984	0.07	3.81
ns-px.online.sh.cn	28,736	0.07	27,357	0.07	5.93
propagation.net	28,652	0.07	29,065	0.07	-0.58
nationalnet.com	28,609	0.07	28,459	0.07	1.38
ocn.ne.jp	28,514	0.07	28,541	0.07	0.75
surf-town.net	28,413	0.07	28,457	0.07	0.69
vpls.net	28,262	0.07	23,215	0.06	22.77
nethost.cz	28,004	0.07	28,155	0.07	0.31
bell.ca	27,971	0.07	28,012	0.07	0.70
spaceweb.ru	27,944	0.07	27,922	0.07	0.93
bellsouth.net	27,815	0.07	27,957	0.07	0.34
hostpoint.ch	27,592	0.07	27,433	0.07	1.43
transip.net	27,141	0.07	27,110	0.07	0.96
bezeqint.net	27,006	0.07	26,981	0.07	0.94
live-servers.net	26,982	0.07	26,915	0.07	1.10
tailormadeservers.com	26,895	0.07	27,114	0.07	0.03
lambdanet.net	26,848	0.07	26,921	0.07	0.58
serico.de	26,705	0.07	27,652	0.07	-2.60
above.net	26,543	0.07	28,040	0.07	-4.53
oxeo.com	26,371	0.07	27,287	0.07	-2.54
cnchost.com	26,343	0.07	26,479	0.07	0.33
evanzo.com	26,331	0.07	26,144	0.07	1.57
kpn.net	26,262	0.07	26,278	0.07	0.79
gandi.net	26,119	0.07	25,628	0.07	2.78
fastweb.it	26,077	0.07	26,004	0.07	1.13
attractsoft.com	26,052	0.07	26,127	0.07	0.56
viawest.net	26,037	0.07	26,057	0.07	0.77
mastak.ru	25,877	0.07	25,930	0.07	0.64
drcnet.com.cn	25,565	0.07	25,701	0.07	0.32
wtr.ru	25,524	0.07	25,906	0.07	-0.64
hazzptt.net.cn	25,450	0.07	24,872	0.06	3.19
cnuninet.net	25,448	0.07	25,445	0.06	0.86
infobox.org	25,365	0.07	25,478	0.07	0.40
it.net	25,327	0.07	25,476	0.07	0.26
nocdirect.com	25,310	0.07	25,423	0.06	0.40
peterhost.ru	25,215	0.06	25,300	0.06	0.51
majordomo.ru	25,140	0.06	25,281	0.06	0.29
webazilla.com	24,943	0.06	19,538	0.05	28.75

* 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.