Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 18877358 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	Mar 2006 Count*	Mar 2006 %	Feb 2006 Count*	Feb 2006 %	Growth %
schlund.de	729,952	3.87	715,386	3.88	-0.27
theplanet.com	616,206	3.26	603,326	3.27	-0.18
a.dns.jp	529,518	2.81	527,218	2.86	-1.84
ev1.net	497,371	2.63	487,395	2.64	-0.26
verio.net	345,422	1.83	359,680	1.95	-6.14
cogentco.com	284,010	1.50	281,043	1.52	-1.23
lacnic.net	274,020	1.45	266,362	1.44	0.55
dns.kr	251,749	1.33	253,024	1.37	-2.76
uu.net	228,153	1.21	226,571	1.23	-1.58
rackspace.com	203,597	1.08	194,766	1.06	2.17
savvis.net	186,139	0.99	169,242	0.92	7.49
a.dns.br	180,682	0.96	175,371	0.95	0.70
pnap.net	161,884	0.86	149,726	0.81	5.67
sprintlink.net	145,636	0.77	161,990	0.88	-12.13
att.net	143,071	0.76	142,266	0.77	-1.71
dialtoneinternet.net	133,369	0.71	128,947	0.70	1.09
ns1.codetel.net.do	126,276	0.67	127,959	0.69	-3.55
secureserver.net	125,837	0.67	117,915	0.64	4.30
level3.net	124,795	0.66	132,286	0.72	-7.80
a.in-addr.cn	117,748	0.62	109,535	0.59	5.06
peer1.net	116,882	0.62	114,543	0.62	-0.27
ipowerweb.net	113,656	0.60	111,610	0.60	-0.47
sakura.ad.jp	113,535	0.60	107,405	0.58	3.31
qwest.net	112,794	0.60	109,893	0.60	0.32
secure.net	110,994	0.59	108,019	0.59	0.43
yahoo.com	110,113	0.58	111,536	0.60	-3.51
wsu.edu	107,754	0.57	108,148	0.59	-2.62
sta.net.cn	97,469	0.52	94,551	0.51	0.75
interland.net	97,133	0.51	93,511	0.51	1.52
ptd.net	92,606	0.49	100,208	0.54	-9.68
technorail.com	90,341	0.48	89,113	0.48	-0.92
fasthosts.net.uk	90,205	0.48	88,482	0.48	-0.36
gnax.net	90,095	0.48	95,923	0.52	-8.20
leaseweb.nl	86,636	0.46	76,563	0.41	10.59
nac.net	83,923	0.44	83,583	0.45	-1.87
earthlink.net	82,617	0.44	77,865	0.42	3.70
your-server.de	80,691	0.43	79,832	0.43	-1.21
alabanza.com	79,436	0.42	81,305	0.44	-4.51
pair.com	77,721	0.41	76,828	0.42	-1.13
pwebtech.com	76,993	0.41	72,150	0.39	4.30
dreamhost.com	76,911	0.41	72,282	0.39	3.99
usadatanet.net	76,525	0.41	76,307	0.41	-1.99
proxad.net	74,812	0.40	69,111	0.37	5.80
layeredtech.com	72,841	0.39	69,401	0.38	2.58
xlink.net	69,361	0.37	59,303	0.32	14.31
ovh.net	68,289	0.36	61,389	0.33	8.72
tpnet.pl	67,978	0.36	67,352	0.37	-1.36
datapipe.net	67,510	0.36	66,933	0.36	-1.42
guangzhou.gd.cn	67,468	0.36	65,154	0.35	1.21
agarik.com	66,473	0.35	73,748	0.40	-11.91
cybercon.com	66,102	0.35	62,795	0.34	2.88
abac.com	64,913	0.34	63,569	0.34	-0.20
rt.ru	64,416	0.34	62,117	0.34	1.35
twtelecom.net	63,474	0.34	62,090	0.34	-0.09
hosteurope.de	63,184	0.33	61,569	0.33	0.30
pri-dns.de	62,394	0.33	61,319	0.33	-0.55
yourhostingaccount.com	61,382	0.33	49,649	0.27	20.83
cncnet.net	61,221	0.32	56,355	0.31	6.17
cais.com	60,834	0.32	39,314	0.21	51.23
yandex.ru	58,055	0.31	50,972	0.28	11.32
concentric.net	57,615	0.31	59,136	0.32	-4.78
liquidweb.com	57,438	0.30	56,038	0.30	0.18
localhost	56,765	0.30	53,425	0.29	3.85
inflow.net	56,472	0.30	51,445	0.28	7.29
eli.net	56,334	0.30	54,469	0.30	1.08
namespace4you.de	55,991	0.30	54,580	0.30	0.26
hostway.net	55,051	0.29	54,824	0.30	-1.86
kornet.net	55,027	0.29	49,582	0.27	8.47
iqtinc.com	54,176	0.29	56,273	0.31	-5.91
globix.net	53,994	0.29	51,108	0.28	3.25
plusserver.de	53,563	0.28	53,935	0.29	-2.94
dtag.de	52,570	0.28	51,236	0.28	0.28
cihost.com	51,907	0.27	51,784	0.28	-2.03
geodns.net	51,808	0.27	50,308	0.27	0.65
ipx-server.de	50,547	0.27	48,808	0.26	1.22
lanlogic.net	50,230	0.27	44,534	0.24	10.24
xspedius.net	49,749	0.26	48,487	0.26	0.28
rz-ip.net	48,694	0.26	46,026	0.25	3.40
tele.dk	48,249	0.26	53,714	0.29	-12.21
ocn.ad.jp	48,030	0.25	47,411	0.26	-0.99
interq.or.jp	47,972	0.25	47,020	0.25	-0.29
he.net	47,927	0.25	48,677	0.26	-3.77
dns.fz.fj.cn	47,399	0.25	47,290	0.26	-2.04
hananet.net	47,151	0.25	41,441	0.22	11.20
zjnbptt.net.cn	46,195	0.24	39,259	0.21	15.00
valueweb.net	46,111	0.24	46,249	0.25	-2.56
scservers.com	45,352	0.24	43,789	0.24	1.22
cnc-idc.com	45,254	0.24	40,909	0.22	8.12
dimenoc.com	45,146	0.24	43,327	0.23	1.84
masterhost.ru	45,138	0.24	49,507	0.27	-10.89
above.net	44,040	0.23	42,277	0.23	1.81
illinois.net	43,699	0.23	40,231	0.22	6.16
clara.net	42,997	0.23	40,762	0.22	3.09
colt.net	42,710	0.23	45,432	0.25	-8.12
dn.net	42,557	0.23	38,919	0.21	6.87
alchemyfx.com	41,971	0.22	41,012	0.22	0.02
exobitnetworks.com	41,780	0.22	32,568	0.18	25.38
cavtel.net	41,710	0.22	40,115	0.22	1.62
servint.com	41,267	0.22	40,002	0.22	0.83
inetbone.net	41,121	0.22	30,945	0.17	29.88
4ph.com	40,932	0.22	38,157	0.21	4.84
choopa.com	40,581	0.21	40,550	0.22	-2.19
ttuhsc.edu	40,529	0.21	48,569	0.26	-18.44
westhawk.co.uk	39,580	0.21	31,585	0.17	22.47
rain.fr	39,291	0.21	38,018	0.21	1.01
enter.net	39,246	0.21	38,071	0.21	0.75
host4u.net	38,262	0.20	38,706	0.21	-3.39
gblx.net	37,766	0.20	35,418	0.19	4.21
twnic.net	37,751	0.20	36,806	0.20	0.24
kasserver.com	37,645	0.20	36,300	0.20	1.36
interbusiness.it	37,600	0.20	37,329	0.20	-1.55
cn.net	37,562	0.20	40,899	0.22	-10.24
datasync.com	37,413	0.20	45,953	0.25	-20.43
intelenet.net	37,384	0.20	36,950	0.20	-1.12
lunarpages.com	36,868	0.20	36,556	0.20	-1.43
cofs.com	36,558	0.19	29,474	0.16	21.23
sagonet.com	36,437	0.19	30,905	0.17	15.23
hosting.com	36,104	0.19	17,128	0.09	106.02
in2net.com	35,619	0.19	36,393	0.20	-4.34
bostondatacenters.com	35,505	0.19	5,586	0.03	521.21
usinternet.com	35,345	0.19	35,165	0.19	-1.76
inode.at	35,209	0.19	33,853	0.18	1.65
nmc1.ptt.js.cn	34,890	0.18	33,184	0.18	2.76
bluegravity.com	34,361	0.18	42,134	0.23	-20.29
sphere.ad.jp	34,088	0.18	42,608	0.23	-21.81
ns01.idc.jp	34,012	0.18	32,674	0.18	1.74
rr.com	33,955	0.18	33,777	0.18	-1.75
lakeheadu.ca	33,643	0.18	32,770	0.18	0.34
swbell.net	33,353	0.18	32,573	0.18	0.08
xs4all.nl	33,303	0.18	32,834	0.18	-0.87
eschelon.com	33,154	0.18	30,826	0.17	5.12
proserve.nl	33,055	0.18	31,730	0.17	1.82
uscuh.com	32,663	0.17	32,649	0.18	-2.22
webcontrolcenter.com	32,401	0.17	32,141	0.17	-1.47
smartnameservers.com	32,106	0.17	33,234	0.18	-5.58
lambdanet.net	31,956	0.17	30,635	0.17	1.95
bta.net.cn	31,590	0.17	30,127	0.16	2.48
pbi.net	31,423	0.17	31,155	0.17	-1.42
fc2.com	31,368	0.17	29,342	0.16	4.48
nuvox.net	30,947	0.16	22,932	0.12	31.90
widexs.nl	30,612	0.16	30,730	0.17	-2.64
aspadmin.com	30,478	0.16	26,946	0.15	10.55
phatservers.com	29,860	0.16	29,530	0.16	-1.17
telus.com	29,699	0.16	37,730	0.20	-23.07
btitelecom.net	29,648	0.16	28,491	0.15	1.70
bellsouth.net	29,456	0.16	29,306	0.16	-1.76
coretel.net	29,329	0.16	29,407	0.16	-2.52
texasdns.com	29,199	0.15	28,773	0.16	-0.82
burst.net	28,897	0.15	28,843	0.16	-2.08
maxim.net	28,720	0.15	14,108	0.08	98.96
neonova.net	28,708	0.15	32,782	0.18	-14.41
servidoresdns.net	28,633	0.15	27,671	0.15	1.13
integraonline.com	28,574	0.15	21,199	0.11	31.74
nlayer.net	28,465	0.15	25,676	0.14	8.35
primarydns.com	28,258	0.15	27,401	0.15	0.79
hopone.net	28,094	0.15	28,930	0.16	-5.09
net.ru	27,607	0.15	27,245	0.15	-0.97
powweb.com	27,188	0.14	25,984	0.14	2.26
pa.net	27,040	0.14	25,583	0.14	3.30
colosolutions.com	26,980	0.14	28,147	0.15	-6.32
atrivo.com	26,972	0.14	22,412	0.12	17.62
chapel1.com	26,821	0.14	22,762	0.12	15.16
lnhi.net	26,724	0.14	25,755	0.14	1.41
telia.com	26,240	0.14	25,889	0.14	-0.94
rcn.net	26,201	0.14	21,077	0.11	21.50
uk2.net	26,110	0.14	26,049	0.14	-2.04
usen.ad.jp	26,048	0.14	22,669	0.12	12.30
iomart.co.uk	26,037	0.14	25,588	0.14	-0.55
dion.ne.jp	25,819	0.14	25,504	0.14	-1.06
gxn.net	25,803	0.14	28,894	0.16	-12.72
easynet.co.uk	25,702	0.14	24,702	0.13	1.69
candidhosting.com	25,667	0.14	25,306	0.14	-0.87
hichina.com	25,647	0.14	23,019	0.12	8.89
b-one-dns.net	25,579	0.14	24,314	0.13	2.82
asmgi.com	25,486	0.14	24,725	0.13	0.74
gldn.net	25,039	0.13	24,193	0.13	1.15
affinity.com	24,875	0.13	21,187	0.11	14.75
amenworld.com	24,875	0.13	29,184	0.16	-16.70
speakeasy.net	24,678	0.13	22,972	0.12	4.99
home.pl	24,584	0.13	23,315	0.13	3.06
kidc.net	24,488	0.13	32,972	0.18	-27.41
uslec.net	24,278	0.13	24,466	0.13	-3.02
opentransfer.com	24,104	0.13	22,562	0.12	4.42
webfusion.co.uk	23,993	0.13	24,471	0.13	-4.17
meganameservers.com	23,978	0.13	24,089	0.13	-2.71
vanion.com	23,976	0.13	23,784	0.13	-1.48
expedient.com	23,877	0.13	22,628	0.12	3.13
aitcom.net	23,580	0.12	23,716	0.13	-2.82
mcbone.net	23,535	0.12	22,943	0.12	0.26
donhost.co.uk	23,487	0.12	23,034	0.12	-0.34
tera-byte.com	23,205	0.12	27,188	0.15	-16.58
ktc.com	23,059	0.12	23,003	0.12	-2.03
propagation.net	23,015	0.12	22,020	0.12	2.15
lucsa.net	22,885	0.12	26,479	0.14	-15.53
elinuxservers.com	22,544	0.12	24,861	0.13	-11.37
demon.co.uk	22,396	0.12	22,022	0.12	-0.60
3fn.net	22,366	0.12	19,954	0.11	9.55
hinet.net	22,304	0.12	21,564	0.12	1.09
pilosoft.com	22,162	0.12	21,748	0.12	-0.40
west-datacenter.net	21,975	0.12	22,931	0.12	-6.34
techmed-it.com	21,955	0.12	56	0.00	38217.57
fastdns.net	21,849	0.12	21,397	0.12	-0.20
enta.net	21,842	0.12	21,845	0.12	-2.28
telcove.net	21,719	0.12	21,210	0.11	0.08
anonymous-servers.com	21,641	0.11	20,828	0.11	1.55
townisp.com	21,425	0.11	18,872	0.10	10.96
rackforce.com	21,392	0.11	19,994	0.11	4.57
accentric.net	21,327	0.11	20,378	0.11	2.29
ip-plus.net	21,232	0.11	19,914	0.11	4.20
ciberlynx.net	21,219	0.11	20,310	0.11	2.11
servepath.com	21,102	0.11	19,578	0.11	5.34
grouptelecom.net	21,075	0.11	13,330	0.07	54.52
jtlnet.com	20,758	0.11	20,373	0.11	-0.42
calpop.com	20,701	0.11	19,915	0.11	1.59
bt.net	20,677	0.11	20,240	0.11	-0.15
fastservers.net	20,585	0.11	19,558	0.11	2.87
casablanca.cz	20,526	0.11	19,516	0.11	2.79
isprime.com	20,463	0.11	16,445	0.09	21.62
eurekanetworks.net	20,357	0.11	20,466	0.11	-2.78
sbcidc.com	20,291	0.11	20,311	0.11	-2.36
tmag.de	20,283	0.11	20,514	0.11	-3.37
bellglobal.com	20,153	0.11	21,653	0.12	-9.04
corbina.net	19,812	0.10	18,219	0.10	6.28
0.200.209	19,725	0.10	17,911	0.10	7.63
novani.com	19,682	0.10	19,349	0.10	-0.58
server-dns.com	19,592	0.10	19,551	0.11	-2.06
netnation.com	19,377	0.10	23,339	0.13	-18.86
comcastbusiness.net	19,332	0.10	18,575	0.10	1.72
nacamar.net	19,201	0.10	19,271	0.10	-2.62
fast.net	18,991	0.10	19,741	0.11	-5.98
go180.net	18,633	0.10	19,054	0.10	-4.42
inet.it	18,614	0.10	18,383	0.10	-1.04
nauticom.net	18,587	0.10	16,311	0.09	11.37
uunet.ca	18,545	0.10	18,269	0.10	-0.79
voyager.net	18,523	0.10	40,383	0.22	-55.17
mediatemple.net	18,406	0.10	17,353	0.09	3.67
uol.com.br	18,356	0.10	16,698	0.09	7.44
futuro.pl	18,320	0.10	17,332	0.09	3.31
abovenet.de	18,133	0.10	17,579	0.10	0.82
hiwaay.net	18,037	0.10	17,969	0.10	-1.89
accelenet.net	17,885	0.09	0	0.00	0.00
novia.net	17,831	0.09	20,436	0.11	-14.72
interware.hu	17,707	0.09	22,927	0.12	-24.52
managed.com	17,637	0.09	17,165	0.09	0.42
web2010.com	17,528	0.09	17,354	0.09	-1.28
superb.net	17,494	0.09	13,961	0.08	22.47
bluegrass.net	17,357	0.09	14,736	0.08	15.12
amaranth.net	17,197	0.09	16,701	0.09	0.64
ns.embratel.net.br	17,123	0.09	14,122	0.08	18.50
ripn.net	17,075	0.09	17,254	0.09	-3.28

* 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.