Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 25401818 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 2007 Count*	Apr 2007 %	Mar 2007 Count*	Mar 2007 %	Growth %
theplanet.com	972,468	3.83	970,713	3.91	-2.06
schlund.de	925,351	3.64	910,429	3.67	-0.63
y.dns.jp	669,995	2.64	651,064	2.62	0.61
ev1servers.net	538,715	2.12	539,934	2.17	-2.45
lacnic.net	316,926	1.25	307,615	1.24	0.73
secureserver.net	302,319	1.19	281,378	1.13	5.04
verio.net	280,281	1.10	278,246	1.12	-1.52
dns.kr	276,215	1.09	270,608	1.09	-0.21
rackspace.com	270,559	1.07	265,517	1.07	-0.38
sakura.ad.jp	250,615	0.99	220,958	0.89	10.89
isprime.com	234,093	0.92	216,836	0.87	5.55
layeredtech.com	232,751	0.92	218,968	0.88	3.92
a.in-addr.cn	214,455	0.84	210,423	0.85	-0.36
a.dns.br	199,665	0.79	192,997	0.78	1.15
uu.net	198,376	0.78	199,815	0.80	-2.94
your-server.de	189,090	0.74	165,039	0.66	12.02
pnap.net	178,343	0.70	203,792	0.82	-14.44
ovh.net	168,291	0.66	155,855	0.63	5.57
cogentco.com	165,350	0.65	158,725	0.64	1.85
yahoo.com	161,240	0.63	154,868	0.62	1.79
dreamhost.com	158,911	0.63	149,846	0.60	3.68
savvis.net	158,469	0.62	150,108	0.60	3.21
nac.net	148,382	0.58	148,196	0.60	-2.11
ipowerweb.net	146,886	0.58	144,162	0.58	-0.38
leaseweb.nl	145,241	0.57	140,634	0.57	0.97
peer1.net	142,588	0.56	140,635	0.57	-0.87
level3.net	137,234	0.54	141,386	0.57	-5.10
technorail.com	136,621	0.54	131,818	0.53	1.33
att.net	135,000	0.53	142,737	0.57	-7.53
proxad.net	133,498	0.53	124,010	0.50	5.25
guangzhou.gd.cn	123,179	0.48	123,686	0.50	-2.63
gnax.net	115,888	0.46	106,110	0.43	6.78
yourhostingaccount.com	112,934	0.44	105,873	0.43	4.29
fasthosts.net.uk	106,504	0.42	100,957	0.41	3.14
softlayer.com	105,829	0.42	96,197	0.39	7.56
secure.net	102,759	0.40	101,251	0.41	-0.78
cais.com	102,620	0.40	108,686	0.44	-7.69
sta.net.cn	101,030	0.40	97,136	0.39	1.69
sprintlink.net	100,075	0.39	97,344	0.39	0.51
fc2.com	99,554	0.39	87,204	0.35	11.61
localhost	94,533	0.37	98,511	0.40	-6.18
hosteurope.de	94,524	0.37	92,993	0.37	-0.62
qwest.net	92,454	0.36	91,432	0.37	-1.14
xlink.net	91,948	0.36	71,021	0.29	26.58
interland.net	91,814	0.36	92,323	0.37	-2.77
pwebtech.com	90,214	0.36	89,049	0.36	-0.95
pri-dns.de	88,407	0.35	87,646	0.35	-1.38
yandex.ru	87,593	0.34	88,862	0.36	-3.63
pair.com	87,340	0.34	92,648	0.37	-7.83
rz-ip.net	85,253	0.34	84,276	0.34	-1.10
zjnbptt.net.cn	83,678	0.33	76,781	0.31	6.55
dialtoneinternet.net	82,307	0.32	79,996	0.32	0.59
cncnet.net	79,931	0.31	83,117	0.33	-5.98
namespace4you.de	79,898	0.31	77,538	0.31	0.74
masterhost.ru	78,359	0.31	76,418	0.31	0.25
scservers.com	76,444	0.30	75,403	0.30	-0.88
dimenoc.com	75,641	0.30	69,015	0.28	7.15
ipx-server.de	73,578	0.29	70,208	0.28	2.46
intergenia.de	73,035	0.29	70,672	0.28	1.04
ocn.ad.jp	72,553	0.29	65,538	0.26	8.23
alabanza.com	72,549	0.29	73,668	0.30	-3.72
interq.or.jp	71,775	0.28	69,081	0.28	1.58
geodns.net	71,165	0.28	64,914	0.26	7.18
dns.fz.fj.cn	69,953	0.28	74,077	0.30	-7.67
abac.com	67,757	0.27	66,222	0.27	0.03
3fn.net	65,819	0.26	63,673	0.26	1.06
nmc1.ptt.js.cn	61,766	0.24	54,290	0.22	11.23
kasserver.com	61,168	0.24	56,595	0.23	5.67
fastservers.net	59,162	0.23	56,940	0.23	1.58
tpnet.pl	58,854	0.23	62,905	0.25	-8.53
datapipe.net	58,540	0.23	57,779	0.23	-0.94
dtag.de	58,178	0.23	61,484	0.25	-7.49
twnic.net	57,912	0.23	56,151	0.23	0.83
lunarpages.com	57,236	0.23	55,247	0.22	1.29
rt-comm.ru	55,253	0.22	55,889	0.23	-3.34
tele.dk	54,506	0.21	53,289	0.21	0.00
usen.ad.jp	53,937	0.21	56,656	0.23	-6.92
ns01.idc.jp	53,785	0.21	51,607	0.21	1.89
inode.at	53,657	0.21	51,226	0.21	2.41
bluehost.com	53,034	0.21	46,558	0.19	11.37
cnc-idc.com	52,059	0.20	56,270	0.23	-9.55
rain.fr	51,929	0.20	49,989	0.20	1.56
hostway.net	51,148	0.20	50,668	0.20	-1.31
ipipe.net	50,905	0.20	43,120	0.17	15.42
liquidweb.com	50,431	0.20	53,288	0.21	-7.47
twtelecom.net	49,850	0.20	50,976	0.21	-4.39
bta.net.cn	49,760	0.20	47,512	0.19	2.39
servint.com	48,802	0.19	48,031	0.19	-0.66
b-one-dns.net	47,885	0.19	45,357	0.18	3.22
colt.net	47,662	0.19	40,565	0.16	14.87
home.pl	47,357	0.19	49,842	0.20	-7.11
inetbone.net	47,322	0.19	45,703	0.18	1.23
gxn.net	46,649	0.18	32,787	0.13	39.10
kornet.net	46,203	0.18	49,436	0.20	-8.63
afrinic.net	46,102	0.18	43,981	0.18	2.48
valueweb.net	45,081	0.18	45,112	0.18	-2.30
he.net	43,739	0.17	43,325	0.17	-1.30
inflow.net	43,415	0.17	41,207	0.17	3.01
cihost.com	43,380	0.17	44,245	0.18	-4.14
bluegravity.com	42,734	0.17	41,193	0.17	1.43
sagonet.com	42,640	0.17	44,640	0.18	-6.61
iweb-hosting.com	42,334	0.17	36,520	0.15	13.33
eli.net	42,274	0.17	71,336	0.29	-42.06
carpathiahost.net	42,136	0.17	12,689	0.05	224.66
sphere.ad.jp	42,054	0.17	41,367	0.17	-0.61
net.ru	41,714	0.16	39,594	0.16	3.00
calpop.com	41,693	0.16	29,334	0.12	38.96
sourcedns.com	41,580	0.16	35,810	0.14	13.52
inhoster.com	41,302	0.16	28,631	0.12	41.04
rr.com	41,175	0.16	44,281	0.18	-9.09
managedsg-inc.com	40,935	0.16	52,177	0.21	-23.30
in2net.com	40,502	0.16	40,800	0.16	-2.95
lnhi.net	40,394	0.16	38,695	0.16	2.06
servidoresdns.net	40,393	0.16	39,010	0.16	1.23
hichina.com	39,989	0.16	47,778	0.19	-18.17
sippia.de	38,845	0.15	29,295	0.12	29.64
interware.hu	38,795	0.15	31,609	0.13	19.99
hananet.net	38,686	0.15	38,142	0.15	-0.84
mediatemple.net	38,633	0.15	36,354	0.15	3.90
proserve.nl	38,612	0.15	28,438	0.11	32.75
backwoodsmedia.com	38,512	0.15	35,660	0.14	5.59
cn.net	38,222	0.15	38,133	0.15	-2.00
dion.ne.jp	38,002	0.15	36,226	0.15	2.56
casablanca.cz	37,913	0.15	35,851	0.14	3.39
swbell.net	37,539	0.15	32,201	0.13	13.98
xs4all.nl	36,530	0.14	34,983	0.14	2.09
hbwhptt.net.cn	36,526	0.14	33,145	0.13	7.74
clara.net	36,045	0.14	35,922	0.14	-1.90
aspadmin.com	35,995	0.14	38,098	0.15	-7.63
netart.pl	35,897	0.14	33,285	0.13	5.44
elinuxservers.com	34,349	0.14	29,911	0.12	12.27
dns2.xm.fj.cn	33,746	0.13	32,962	0.13	0.09
interbusiness.it	33,490	0.13	33,122	0.13	-1.15
webcontrolcenter.com	32,605	0.13	32,382	0.13	-1.56
amenworld.com	31,998	0.13	31,120	0.13	0.53
meganameservers.com	31,960	0.13	30,288	0.12	3.17
donhost.co.uk	31,540	0.12	30,679	0.12	0.51
netnation.com	31,525	0.12	28,002	0.11	10.07
atrivo.com	31,067	0.12	34,702	0.14	-12.47
dnspro.de	30,932	0.12	24,593	0.10	22.97
bellsouth.net	30,850	0.12	30,847	0.12	-2.22
servepath.com	30,624	0.12	30,817	0.12	-2.84
sdjnptt.net.cn	30,551	0.12	24,891	0.10	20.00
host4u.net	30,460	0.12	31,178	0.13	-4.48
primarydns.com	30,342	0.12	31,202	0.13	-4.93
above.net	30,063	0.12	28,991	0.12	1.38
lambdanet.net	29,917	0.12	18,938	0.08	54.45
hinet.net	29,760	0.12	28,513	0.11	2.04
iomart.co.uk	29,589	0.12	29,503	0.12	-1.95
datanet.hu	29,212	0.11	27,867	0.11	2.49
telecity.net	29,004	0.11	32,246	0.13	-12.06
west-datacenter.net	28,898	0.11	29,140	0.12	-3.04
intercom.com.cn	28,530	0.11	26,674	0.11	4.57
telia.com	28,116	0.11	28,818	0.12	-4.61
burst.net	28,048	0.11	26,365	0.11	4.01
widexs.nl	27,897	0.11	27,051	0.11	0.83
cnchost.com	27,422	0.11	23,721	0.10	13.02
easynet.co.uk	27,279	0.11	26,098	0.11	2.19
spylog.com	27,094	0.11	22,684	0.09	16.78
hopone.net	26,980	0.11	26,463	0.11	-0.32
kidc.net	26,959	0.11	26,755	0.11	-1.49
a.ns	26,839	0.11	17,622	0.07	48.90
deftechgroup.com	26,396	0.10	27,216	0.11	-5.18
dn.net	26,173	0.10	27,320	0.11	-6.34
anonymous-servers.com	25,985	0.10	25,748	0.10	-1.33
phatservers.com	25,859	0.10	32,084	0.13	-21.20
pilosoft.com	25,502	0.10	45,438	0.18	-45.13
switchcommgroup.com	25,228	0.10	2,148	0.01	1048.27
pbi.net	24,990	0.10	25,820	0.10	-5.37
uk2.net	24,980	0.10	24,801	0.10	-1.53
mcbone.net	24,798	0.10	24,025	0.10	0.91
keyweb.de	24,726	0.10	24,184	0.10	-0.04
inet.it	24,537	0.10	23,524	0.09	1.98
tmag.de	24,505	0.10	23,801	0.10	0.66
xo.com	24,356	0.10	23,714	0.10	0.41
valuehost.ru	24,020	0.09	23,434	0.09	0.21
alchemyfx.com	23,904	0.09	24,074	0.10	-2.92
uunet.ca	23,878	0.09	23,498	0.09	-0.65
serico.de	23,867	0.09	8,579	0.03	171.99
uslec.net	23,768	0.09	23,639	0.10	-1.70
server260.com	23,767	0.09	23,006	0.09	1.00
iprevolution.co.jp	23,452	0.09	24,230	0.10	-5.37
datadragon.net	23,426	0.09	16,910	0.07	35.44
aitcom.net	23,166	0.09	23,250	0.09	-2.59
corbina.net	23,122	0.09	22,633	0.09	-0.12
gyron.net	22,988	0.09	22,190	0.09	1.28
kei.pl	22,593	0.09	21,954	0.09	0.61
trouble-free.net	22,526	0.09	21,656	0.09	1.70
keyway.net	22,485	0.09	21,279	0.09	3.31
ip-plus.net	22,295	0.09	22,648	0.09	-3.76
demon.co.uk	22,288	0.09	22,474	0.09	-3.04
hosting.com	22,248	0.09	22,554	0.09	-3.56
tera-byte.com	22,175	0.09	21,453	0.09	1.06
futuro.pl	22,168	0.09	20,894	0.08	3.73
cnuninet.net	21,956	0.09	20,157	0.08	6.49
dynamicweb.net	21,866	0.09	21,007	0.08	1.77
home.nl	21,829	0.09	20,811	0.08	2.55
as5587.net	21,624	0.09	21,733	0.09	-2.72
webfusion.co.uk	21,582	0.08	21,747	0.09	-2.97
ctnt.com.cn	21,575	0.08	22,008	0.09	-4.16
fastdns.net	21,531	0.08	21,577	0.09	-2.44
server-dns.com	21,445	0.08	21,107	0.08	-0.67
fastweb.it	21,315	0.08	21,211	0.09	-1.75
rackforce.com	21,250	0.08	25,538	0.10	-18.65
ultradns.net	21,190	0.08	7,765	0.03	166.80
ttnet.net.tr	20,899	0.08	19,651	0.08	3.98
ieurop.net	20,896	0.08	19,156	0.08	6.65
bt.net	20,892	0.08	19,507	0.08	4.71
speakeasy.net	20,857	0.08	21,289	0.09	-4.22
ocn.ne.jp	20,850	0.08	20,489	0.08	-0.51
vwh1.net	20,833	0.08	21,288	0.09	-4.32
evanzo.com	20,793	0.08	20,155	0.08	0.86
infobox.org	20,750	0.08	19,049	0.08	6.50
gblx.net	20,745	0.08	21,096	0.08	-3.86
cox.net	20,701	0.08	20,720	0.08	-2.32
gldn.net	20,567	0.08	22,302	0.09	-9.84
colo4dallas.net	20,492	0.08	19,246	0.08	4.10
pipex.net	20,255	0.08	24,992	0.10	-20.76
ns-px.online.sh.cn	20,241	0.08	25,596	0.10	-22.69
crystaltech.com	20,184	0.08	22,868	0.09	-13.71
hivelocity.net	19,903	0.08	21,349	0.09	-8.85
bell.ca	19,812	0.08	18,041	0.07	7.37
choopa.com	19,624	0.08	17,004	0.07	12.83
activeisp.com	19,602	0.08	19,601	0.08	-2.23
national-net.com	19,598	0.08	20,547	0.08	-6.75
ilse.net	19,582	0.08	19,064	0.08	0.42
hm23	19,438	0.08	19,541	0.08	-2.75
alphared.com	19,409	0.08	18,344	0.07	3.44
t-online.hu	19,342	0.08	18,832	0.08	0.42
servage.net	19,311	0.08	11,307	0.05	66.98
enta.net	19,243	0.08	19,159	0.08	-1.80
tierra.net	19,225	0.08	19,105	0.08	-1.62
netbenefit.co.uk	19,031	0.07	27,379	0.11	-32.04
ikp.pl	19,017	0.07	18,528	0.07	0.35
bezeqint.net	18,990	0.07	15,745	0.06	17.92
conepuppy.com	18,945	0.07	17,691	0.07	4.70
dnsjunction.com	18,724	0.07	18,903	0.08	-3.16
cnmobile.net	18,654	0.07	17,979	0.07	1.44
earthlink.net	18,648	0.07	26,801	0.11	-31.97
pochta.ru	18,634	0.07	21,164	0.09	-13.92
firstserver.ne.jp	18,335	0.07	17,809	0.07	0.66
voxel.net	18,279	0.07	17,912	0.07	-0.23
uol.com.br	18,268	0.07	14,306	0.06	24.84
broadwing.net	18,232	0.07	16,364	0.07	8.93
v-ns.de	18,145	0.07	17,692	0.07	0.27
hostlab.nl	18,125	0.07	17,581	0.07	0.79
cybercon.com	18,065	0.07	21,692	0.09	-18.58
atjeu.com	18,001	0.07	17,103	0.07	2.90
sbcidc.com	17,975	0.07	17,890	0.07	-1.77
vol.cz	17,964	0.07	16,411	0.07	7.02

* 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.