Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 19464360 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 2006 Count*	Apr 2006 %	Mar 2006 Count*	Mar 2006 %	Growth %
theplanet.com	761,384	3.91	616,206	3.26	19.83
schlund.de	739,714	3.80	729,952	3.87	-1.72
ev1.net	527,298	2.71	497,371	2.63	2.82
a.dns.jp	525,577	2.70	529,518	2.81	-3.74
verio.net	349,298	1.79	345,422	1.83	-1.93
cogentco.com	268,770	1.38	284,010	1.50	-8.22
lacnic.net	263,489	1.35	274,020	1.45	-6.74
dns.kr	261,357	1.34	251,749	1.33	0.69
uu.net	222,394	1.14	228,153	1.21	-5.46
rackspace.com	211,491	1.09	203,597	1.08	0.74
savvis.net	172,589	0.89	186,139	0.99	-10.08
a.dns.br	167,749	0.86	180,682	0.96	-9.96
att.net	144,958	0.74	143,071	0.76	-1.74
secureserver.net	141,227	0.73	125,837	0.67	8.85
sprintlink.net	136,190	0.70	145,636	0.77	-9.31
ns1.codetel.net.do	135,437	0.70	126,276	0.67	4.02
pnap.net	134,447	0.69	161,884	0.86	-19.45
dialtoneinternet.net	133,364	0.69	133,369	0.71	-3.02
a.in-addr.cn	131,581	0.68	117,748	0.62	8.38
peer1.net	127,325	0.65	116,882	0.62	5.65
level3.net	124,567	0.64	124,795	0.66	-3.19
yahoo.com	117,325	0.60	110,113	0.58	3.34
ipowerweb.net	117,044	0.60	113,656	0.60	-0.12
sakura.ad.jp	113,607	0.58	113,535	0.60	-2.95
secure.net	111,453	0.57	110,994	0.59	-2.61
wsu.edu	108,253	0.56	107,754	0.57	-2.57
qwest.net	101,000	0.52	112,794	0.60	-13.16
nac.net	95,309	0.49	83,923	0.44	10.14
technorail.com	93,425	0.48	90,341	0.48	0.30
gnax.net	93,112	0.48	90,095	0.48	0.23
ptd.net	92,388	0.47	92,606	0.49	-3.24
interland.net	90,364	0.46	97,133	0.51	-9.77
layeredtech.com	89,810	0.46	72,841	0.39	19.58
sta.net.cn	89,748	0.46	97,469	0.52	-10.70
leaseweb.nl	88,807	0.46	86,636	0.46	-0.59
fasthosts.net.uk	87,572	0.45	90,205	0.48	-5.85
your-server.de	85,018	0.44	80,691	0.43	2.18
dreamhost.com	85,000	0.44	76,911	0.41	7.18
cais.com	82,719	0.42	60,834	0.32	31.87
alabanza.com	81,723	0.42	79,436	0.42	-0.22
pwebtech.com	81,656	0.42	76,993	0.41	2.86
proxad.net	80,264	0.41	74,812	0.40	4.05
pair.com	78,949	0.41	77,721	0.41	-1.48
earthlink.net	78,835	0.41	82,617	0.44	-7.46
usadatanet.net	76,720	0.39	76,525	0.41	-2.77
ovh.net	73,137	0.38	68,289	0.36	3.87
xlink.net	72,716	0.37	69,361	0.37	1.68
guangzhou.gd.cn	72,014	0.37	67,468	0.36	3.52
concentric.net	71,931	0.37	57,615	0.31	21.08
yourhostingaccount.com	71,647	0.37	61,382	0.33	13.20
cncnet.net	69,780	0.36	61,221	0.32	10.54
cybercon.com	68,944	0.35	66,102	0.35	1.15
xspedius.net	68,229	0.35	49,749	0.26	33.01
datapipe.net	67,510	0.35	67,510	0.36	-3.02
abac.com	66,830	0.34	64,913	0.34	-0.15
tpnet.pl	66,664	0.34	67,978	0.36	-4.89
pri-dns.de	65,869	0.34	62,394	0.33	2.39
hosteurope.de	65,774	0.34	63,184	0.33	0.96
choopa.com	65,774	0.34	40,581	0.21	57.19
yandex.ru	62,983	0.32	58,055	0.31	5.22
inflow.net	61,228	0.31	56,472	0.30	5.15
kornet.net	60,497	0.31	55,027	0.29	6.63
twtelecom.net	59,767	0.31	63,474	0.34	-8.68
cihost.com	58,775	0.30	51,907	0.27	9.82
liquidweb.com	58,570	0.30	57,438	0.30	-1.10
intergenia.de	58,458	0.30	0	0.00	0.00
nlayer.net	58,403	0.30	28,465	0.15	98.99
namespace4you.de	58,016	0.30	55,991	0.30	0.49
globix.net	57,352	0.29	53,994	0.29	3.02
hostway.net	55,049	0.28	55,051	0.29	-3.02
dns.fz.fj.cn	54,501	0.28	47,399	0.25	11.52
ipx-server.de	54,246	0.28	50,547	0.27	4.08
eli.net	54,138	0.28	56,334	0.30	-6.80
rt-comm.ru	53,523	0.27	3	0.00	1730195.49
he.net	53,382	0.27	47,927	0.25	8.02
geodns.net	53,346	0.27	51,808	0.27	-0.14
dtag.de	53,153	0.27	52,570	0.28	-1.94
pilosoft.com	52,299	0.27	22,162	0.12	128.87
masterhost.ru	51,285	0.26	45,138	0.24	10.19
localhost	51,113	0.26	56,765	0.30	-12.67
iqtinc.com	50,863	0.26	54,176	0.29	-8.95
exobitnetworks.com	50,369	0.26	41,780	0.22	16.92
rz-ip.net	50,263	0.26	48,694	0.26	0.11
lanlogic.net	50,085	0.26	50,230	0.27	-3.30
interq.or.jp	49,770	0.26	47,972	0.25	0.62
agarik.com	49,085	0.25	66,473	0.35	-28.38
tele.dk	48,400	0.25	48,249	0.26	-2.71
dimenoc.com	48,105	0.25	45,146	0.24	3.34
alchemyfx.com	47,960	0.25	41,971	0.22	10.82
cnc-idc.com	47,879	0.25	45,254	0.24	2.61
scservers.com	47,574	0.24	45,352	0.24	1.74
illinois.net	46,731	0.24	43,699	0.23	3.71
cavtel.net	46,288	0.24	41,710	0.22	7.63
valueweb.net	45,775	0.24	46,111	0.24	-3.72
ocn.ad.jp	45,414	0.23	48,030	0.25	-8.30
hananet.net	45,030	0.23	47,151	0.25	-7.38
dn.net	44,919	0.23	42,557	0.23	2.37
zjnbptt.net.cn	43,814	0.23	46,195	0.24	-8.01
clara.net	43,371	0.22	42,997	0.23	-2.17
servint.com	42,734	0.22	41,267	0.22	0.43
colt.net	41,585	0.21	42,710	0.23	-5.57
rain.fr	41,297	0.21	39,291	0.21	1.94
westhawk.co.uk	41,223	0.21	39,580	0.21	1.01
ttuhsc.edu	41,160	0.21	40,529	0.21	-1.51
above.net	40,367	0.21	44,040	0.23	-11.10
twnic.net	39,443	0.20	37,751	0.20	1.33
intelenet.net	38,837	0.20	37,384	0.20	0.75
cn.net	38,815	0.20	37,562	0.20	0.22
kasserver.com	38,809	0.20	37,645	0.20	-0.02
inetbone.net	38,734	0.20	41,121	0.22	-8.65
4ph.com	37,993	0.20	40,932	0.22	-9.98
host4u.net	37,804	0.19	38,262	0.20	-4.18
hosting.com	37,799	0.19	36,104	0.19	1.54
bostondatacenters.com	37,728	0.19	35,505	0.19	3.06
sphere.ad.jp	37,606	0.19	34,088	0.18	6.99
interbusiness.it	37,519	0.19	37,600	0.20	-3.22
neonova.net	37,475	0.19	28,708	0.15	26.60
integraonline.com	37,463	0.19	28,574	0.15	27.15
nmc1.ptt.js.cn	37,277	0.19	34,890	0.18	3.62
in2net.com	36,805	0.19	35,619	0.19	0.21
lunarpages.com	36,718	0.19	36,868	0.20	-3.41
fc2.com	36,203	0.19	31,368	0.17	11.93
ns01.idc.jp	35,994	0.18	34,012	0.18	2.64
proserve.nl	35,316	0.18	33,055	0.18	3.62
eschelon.com	34,936	0.18	33,154	0.18	2.20
pbi.net	34,802	0.18	31,423	0.17	7.41
bluegravity.com	34,387	0.18	34,361	0.18	-2.94
enter.net	34,047	0.17	39,246	0.21	-15.86
sagonet.com	33,944	0.17	36,437	0.19	-9.65
inode.at	33,844	0.17	35,209	0.19	-6.78
datasync.com	33,732	0.17	37,413	0.20	-12.56
gblx.net	33,627	0.17	37,766	0.20	-13.64
cofs.com	33,591	0.17	36,558	0.19	-10.89
dwave.net	33,394	0.17	733	0.00	4318.41
lambdanet.net	33,374	0.17	31,956	0.17	1.29
nuvox.net	33,289	0.17	30,947	0.16	4.32
rr.com	32,506	0.17	33,955	0.18	-7.15
smartnameservers.com	32,279	0.17	32,106	0.17	-2.49
bta.net.cn	32,223	0.17	31,590	0.17	-1.07
usinternet.com	32,171	0.17	35,345	0.19	-11.73
webcontrolcenter.com	32,045	0.16	32,401	0.17	-4.08
texasdns.com	31,984	0.16	29,199	0.15	6.23
xs4all.nl	31,826	0.16	33,303	0.18	-7.32
btitelecom.net	31,281	0.16	29,648	0.16	2.33
usen.ad.jp	30,940	0.16	26,048	0.14	15.20
swbell.net	30,902	0.16	33,353	0.18	-10.14
gxn.net	30,694	0.16	25,803	0.14	15.37
chapel1.com	30,191	0.16	26,821	0.14	9.17
propagation.net	29,922	0.15	23,015	0.12	26.09
widexs.nl	29,860	0.15	30,612	0.16	-5.40
coretel.net	29,400	0.15	29,329	0.16	-2.78
bellsouth.net	29,362	0.15	29,456	0.16	-3.33
lakeheadu.ca	29,149	0.15	33,643	0.18	-15.97
servidoresdns.net	29,040	0.15	28,633	0.15	-1.64
pa.net	28,820	0.15	27,040	0.14	3.37
powweb.com	28,655	0.15	27,188	0.14	2.22
lnhi.net	28,460	0.15	26,724	0.14	3.28
burst.net	28,385	0.15	28,897	0.15	-4.73
3fn.net	27,963	0.14	22,366	0.12	21.25
aspadmin.com	27,595	0.14	30,478	0.16	-12.19
0.200.209	27,559	0.14	19,725	0.10	35.50
hopone.net	27,544	0.14	28,094	0.15	-4.91
townisp.com	27,116	0.14	21,425	0.11	22.75
b-one-dns.net	27,077	0.14	25,579	0.14	2.66
hichina.com	27,046	0.14	25,647	0.14	2.27
home.pl	26,838	0.14	24,584	0.13	5.88
atrivo.com	26,824	0.14	26,972	0.14	-3.55
phatservers.com	26,652	0.14	29,860	0.16	-13.44
primarydns.com	26,490	0.14	28,258	0.15	-9.08
iomart.co.uk	26,485	0.14	26,037	0.14	-1.35
dion.ne.jp	26,392	0.14	25,819	0.14	-0.86
uk2.net	26,163	0.13	26,110	0.14	-2.82
maxim.net	26,160	0.13	28,720	0.15	-11.66
asmgi.com	26,038	0.13	25,486	0.14	-0.92
amenworld.com	25,780	0.13	24,875	0.13	0.51
netnation.com	25,634	0.13	19,377	0.10	28.30
telia.com	25,587	0.13	26,240	0.14	-5.43
opentransfer.com	25,480	0.13	24,104	0.13	2.52
gldn.net	25,413	0.13	25,039	0.13	-1.57
expedient.com	25,320	0.13	23,877	0.13	2.85
meganameservers.com	25,244	0.13	23,978	0.13	2.10
candidhosting.com	25,197	0.13	25,667	0.14	-4.79
kidc.net	24,543	0.13	24,488	0.13	-2.80
accelenet.net	24,398	0.13	17,885	0.09	32.30
vanion.com	24,122	0.12	23,976	0.13	-2.43
uslec.net	24,117	0.12	24,278	0.13	-3.66
mcbone.net	24,086	0.12	23,535	0.12	-0.75
donhost.co.uk	24,052	0.12	23,487	0.12	-0.68
speakeasy.net	23,988	0.12	24,678	0.13	-5.73
rackforce.com	23,928	0.12	21,392	0.11	8.48
isprime.com	23,882	0.12	20,463	0.11	13.19
fastservers.net	23,865	0.12	20,585	0.11	12.44
calpop.com	23,804	0.12	20,701	0.11	11.52
webfusion.co.uk	23,707	0.12	23,993	0.13	-4.17
interware.hu	23,636	0.12	17,707	0.09	29.46
west-datacenter.net	23,483	0.12	21,975	0.12	3.64
aitcom.net	23,439	0.12	23,580	0.12	-3.60
elinuxservers.com	23,343	0.12	22,544	0.12	0.42
ciberlynx.net	23,229	0.12	21,219	0.11	6.17
ktc.com	23,210	0.12	23,059	0.12	-2.38
hinet.net	23,100	0.12	22,304	0.12	0.45
easynet.co.uk	22,819	0.12	25,702	0.14	-13.89
demon.co.uk	22,563	0.12	22,396	0.12	-2.29
novani.com	22,524	0.12	19,682	0.10	10.99
rcn.net	22,499	0.12	26,201	0.14	-16.72
anonymous-servers.com	22,303	0.11	21,641	0.11	-0.05
accentric.net	22,272	0.11	21,327	0.11	1.28
techmed-it.com	22,242	0.11	21,955	0.12	-1.75
servepath.com	22,179	0.11	21,102	0.11	1.93
enta.net	22,091	0.11	21,842	0.12	-1.91
fastdns.net	22,018	0.11	21,849	0.12	-2.27
casablanca.cz	21,974	0.11	20,526	0.11	3.83
eurekanetworks.net	21,573	0.11	20,357	0.11	2.78
tmag.de	21,559	0.11	20,283	0.11	3.09
jtlnet.com	21,477	0.11	20,758	0.11	0.34
nauticom.net	21,444	0.11	18,587	0.10	11.89
ip-plus.net	21,361	0.11	21,232	0.11	-2.43
iweb-hosting.com	21,128	0.11	16,904	0.09	21.22
bluegrass.net	21,070	0.11	17,357	0.09	17.73
bt.net	21,012	0.11	20,677	0.11	-1.44
grouptelecom.net	20,915	0.11	21,075	0.11	-3.75
corbina.net	20,351	0.10	19,812	0.10	-0.38
comcastbusiness.net	20,232	0.10	19,332	0.10	1.50
telus.com	20,066	0.10	29,699	0.16	-34.47
futuro.pl	19,999	0.10	18,320	0.10	5.87
net.ru	19,859	0.10	27,607	0.15	-30.23
ispdial.com	19,801	0.10	0	0.00	0.00
inet.it	19,753	0.10	18,614	0.10	2.92
mycyberhosting.com	19,689	0.10	14,292	0.08	33.61
server-dns.com	19,674	0.10	19,592	0.10	-2.61
tera-byte.com	19,570	0.10	23,205	0.12	-18.21
nacamar.net	19,354	0.10	19,201	0.10	-2.24
mediatemple.net	19,271	0.10	18,406	0.10	1.54
sbcidc.com	19,075	0.10	20,291	0.11	-8.83
voyager.net	18,907	0.10	18,523	0.10	-1.01
gramtel.net	18,756	0.10	379	0.00	4699.57
uunet.ca	18,461	0.09	18,545	0.10	-3.46
managed.com	18,377	0.09	17,637	0.09	1.05
aplushosting.com	18,294	0.09	3,754	0.02	372.62
fast.net	18,283	0.09	18,991	0.10	-6.63
triton.net	18,233	0.09	14,229	0.08	24.28
hiwaay.net	18,110	0.09	18,037	0.10	-2.62
amaranth.net	18,076	0.09	17,197	0.09	1.94
v-ns.de	18,049	0.09	15,470	0.08	13.15
national-net.com	18,002	0.09	16,815	0.09	3.83
winstar.net	17,895	0.09	16,792	0.09	3.35
telcove.net	17,836	0.09	21,719	0.12	-20.35
ipipe.net	17,820	0.09	11,584	0.06	49.19
go180.net	17,790	0.09	18,633	0.10	-7.40
ikp.pl	17,786	0.09	14,690	0.08	17.42

* 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.