Report Description

The ISP Market Share Report analyzes the distribution of web servers in our surveys across different ISPs. By classifying the 20025405 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 2006 Count*	May 2006 %	Apr 2006 Count*	Apr 2006 %	Growth %
theplanet.com	829,821	4.14	761,384	3.91	5.94
schlund.de	757,095	3.78	739,714	3.80	-0.52
a.dns.jp	544,058	2.72	525,577	2.70	0.62
ev1.net	524,993	2.62	527,298	2.71	-3.23
verio.net	369,808	1.85	349,298	1.79	2.91
lacnic.net	265,543	1.33	263,489	1.35	-2.04
cogentco.com	257,479	1.29	268,770	1.38	-6.88
dns.kr	256,245	1.28	261,357	1.34	-4.70
uu.net	221,458	1.11	222,394	1.14	-3.21
rackspace.com	217,161	1.08	211,491	1.09	-0.20
savvis.net	201,566	1.01	172,589	0.89	13.52
a.dns.br	168,747	0.84	167,749	0.86	-2.22
secureserver.net	149,386	0.75	141,227	0.73	2.81
att.net	145,577	0.73	144,958	0.74	-2.39
ns1.codetel.net.do	139,647	0.70	135,437	0.70	0.22
dialtoneinternet.net	138,617	0.69	133,364	0.69	1.03
sprintlink.net	135,600	0.68	136,190	0.70	-3.22
a.in-addr.cn	129,023	0.64	131,581	0.68	-4.69
peer1.net	128,844	0.64	127,325	0.65	-1.64
pnap.net	125,502	0.63	134,447	0.69	-9.27
yahoo.com	125,385	0.63	117,325	0.60	3.88
level3.net	122,090	0.61	124,567	0.64	-4.73
ipowerweb.net	119,564	0.60	117,044	0.60	-0.71
sakura.ad.jp	116,821	0.58	113,607	0.58	-0.05
secure.net	112,880	0.56	111,453	0.57	-1.56
wsu.edu	108,778	0.54	108,253	0.56	-2.33
leaseweb.nl	104,627	0.52	88,807	0.46	14.51
sta.net.cn	99,167	0.50	89,748	0.46	7.40
gnax.net	98,113	0.49	93,112	0.48	2.42
nac.net	97,468	0.49	95,309	0.49	-0.60
technorail.com	96,965	0.48	93,425	0.48	0.88
qwest.net	95,712	0.48	101,000	0.52	-7.89
interland.net	95,123	0.48	90,364	0.46	2.32
ptd.net	93,650	0.47	92,388	0.47	-1.47
your-server.de	92,853	0.46	85,018	0.44	6.16
dreamhost.com	92,647	0.46	85,000	0.44	5.94
fasthosts.net.uk	90,791	0.45	87,572	0.45	0.77
xspedius.net	89,681	0.45	68,229	0.35	27.76
choopa.com	86,885	0.43	65,774	0.34	28.40
cais.com	85,117	0.43	82,719	0.42	0.02
pwebtech.com	85,001	0.42	81,656	0.42	1.18
xlink.net	81,467	0.41	72,716	0.37	8.90
alabanza.com	81,240	0.41	81,723	0.42	-3.38
pair.com	80,899	0.40	78,949	0.41	-0.40
ovh.net	79,501	0.40	73,137	0.38	5.66
layeredtech.com	79,020	0.39	89,810	0.46	-14.48
proxad.net	78,840	0.39	80,264	0.41	-4.53
usadatanet.net	76,506	0.38	76,720	0.39	-3.07
concentric.net	74,655	0.37	71,931	0.37	0.88
guangzhou.gd.cn	74,379	0.37	72,014	0.37	0.39
nlayer.net	71,688	0.36	58,403	0.30	19.31
cybercon.com	71,602	0.36	68,944	0.35	0.95
yourhostingaccount.com	70,665	0.35	71,647	0.37	-4.13
abac.com	69,032	0.34	66,830	0.34	0.40
earthlink.net	68,648	0.34	78,835	0.41	-15.36
datapipe.net	68,441	0.34	67,510	0.35	-1.46
hosteurope.de	68,416	0.34	65,774	0.34	1.10
cncnet.net	67,379	0.34	69,780	0.36	-6.15
cihost.com	65,993	0.33	58,775	0.30	9.14
pilosoft.com	65,413	0.33	52,299	0.27	21.57
twtelecom.net	65,126	0.33	59,767	0.31	5.91
eli.net	64,946	0.32	54,138	0.28	16.60
globix.net	64,033	0.32	57,352	0.29	8.52
kornet.net	63,973	0.32	60,497	0.31	2.78
pri-dns.de	63,785	0.32	65,869	0.34	-5.88
tpnet.pl	62,126	0.31	66,664	0.34	-9.42
yandex.ru	61,759	0.31	62,983	0.32	-4.69
zjnbptt.net.cn	61,477	0.31	43,814	0.23	36.38
intergenia.de	61,345	0.31	58,458	0.30	2.00
localhost	61,164	0.31	51,113	0.26	16.31
inflow.net	59,873	0.30	61,228	0.31	-4.95
rt-comm.ru	59,521	0.30	53,523	0.27	8.09
namespace4you.de	59,359	0.30	58,016	0.30	-0.55
liquidweb.com	58,656	0.29	58,570	0.30	-2.66
masterhost.ru	55,064	0.27	51,285	0.26	4.36
hostway.net	54,765	0.27	55,049	0.28	-3.30
dns.fz.fj.cn	54,382	0.27	54,501	0.28	-3.01
ipx-server.de	54,183	0.27	54,246	0.28	-2.91
rz-ip.net	54,180	0.27	50,263	0.26	4.77
scservers.com	53,621	0.27	47,574	0.24	9.55
iqtinc.com	53,605	0.27	50,863	0.26	2.44
dtag.de	53,591	0.27	53,153	0.27	-2.00
exobitnetworks.com	52,674	0.26	50,369	0.26	1.65
lanlogic.net	52,619	0.26	50,085	0.26	2.12
interq.or.jp	51,559	0.26	49,770	0.26	0.69
cavtel.net	51,408	0.26	46,288	0.24	7.95
geodns.net	50,908	0.25	53,346	0.27	-7.24
dimenoc.com	50,680	0.25	48,105	0.25	2.40
he.net	50,656	0.25	53,382	0.27	-7.77
ocn.ad.jp	49,983	0.25	45,414	0.23	6.98
hananet.net	49,509	0.25	45,030	0.23	6.87
tele.dk	48,853	0.24	48,400	0.25	-1.89
4ph.com	47,408	0.24	37,993	0.20	21.28
westhawk.co.uk	47,233	0.24	41,223	0.21	11.37
inetbone.net	46,241	0.23	38,734	0.20	16.04
agarik.com	46,138	0.23	49,085	0.25	-8.64
valueweb.net	45,563	0.23	45,775	0.24	-3.25
alchemyfx.com	45,084	0.23	47,960	0.25	-8.63
cnc-idc.com	44,260	0.22	47,879	0.25	-10.15
integraonline.com	44,072	0.22	37,463	0.19	14.35
illinois.net	43,781	0.22	46,731	0.24	-8.94
servint.com	43,101	0.22	42,734	0.22	-1.97
nmc1.ptt.js.cn	42,985	0.21	37,277	0.19	12.08
clara.net	42,829	0.21	43,371	0.22	-4.02
rain.fr	42,432	0.21	41,297	0.21	-0.13
dn.net	42,072	0.21	44,919	0.23	-8.96
above.net	41,987	0.21	40,367	0.21	1.10
colt.net	41,579	0.21	41,585	0.21	-2.82
fc2.com	41,105	0.21	36,203	0.19	10.36
lunarpages.com	40,658	0.20	36,718	0.19	7.63
kasserver.com	40,406	0.20	38,809	0.20	1.20
cn.net	39,894	0.20	38,815	0.20	-0.10
cofs.com	39,869	0.20	33,591	0.17	15.36
twnic.net	39,839	0.20	39,443	0.20	-1.83
intelenet.net	39,435	0.20	38,837	0.20	-1.31
hosting.com	39,303	0.20	37,799	0.19	1.07
afrinic.net	39,046	0.19	185	0.00	20414.63
bostondatacenters.com	38,819	0.19	37,728	0.19	0.01
inode.at	38,262	0.19	33,844	0.17	9.89
ttuhsc.edu	37,836	0.19	41,160	0.21	-10.65
ns01.idc.jp	37,706	0.19	35,994	0.18	1.82
host4u.net	37,633	0.19	37,804	0.19	-3.24
in2net.com	37,510	0.19	36,805	0.19	-0.94
sagonet.com	37,477	0.19	33,944	0.17	7.32
gblx.net	37,131	0.19	33,627	0.17	7.33
neonova.net	36,670	0.18	37,475	0.19	-4.89
proserve.nl	36,255	0.18	35,316	0.18	-0.22
sphere.ad.jp	36,194	0.18	37,606	0.19	-6.45
interbusiness.it	35,200	0.18	37,519	0.19	-8.81
pbi.net	34,905	0.17	34,802	0.18	-2.51
datasync.com	34,516	0.17	33,732	0.17	-0.54
chapel1.com	34,499	0.17	30,191	0.16	11.07
bluegravity.com	34,266	0.17	34,387	0.18	-3.14
nuvox.net	34,192	0.17	33,289	0.17	-0.17
propagation.net	33,934	0.17	29,922	0.15	10.23
enter.net	33,872	0.17	34,047	0.17	-3.30
usinternet.com	33,352	0.17	32,171	0.17	0.77
rr.com	33,261	0.17	32,506	0.17	-0.54
webcontrolcenter.com	33,018	0.16	32,045	0.16	0.15
ns1.solarus.biz	32,870	0.16	0	0.00	0.00
smartnameservers.com	32,699	0.16	32,279	0.17	-1.54
texasdns.com	32,473	0.16	31,984	0.16	-1.32
usen.ad.jp	32,204	0.16	30,940	0.16	1.17
bta.net.cn	31,816	0.16	32,223	0.17	-4.03
swbell.net	31,586	0.16	30,902	0.16	-0.65
btitelecom.net	31,507	0.16	31,281	0.16	-2.10
eschelon.com	31,418	0.16	34,936	0.18	-12.59
isprime.com	31,094	0.16	23,882	0.12	26.55
aspadmin.com	30,719	0.15	27,595	0.14	8.20
lambdanet.net	30,446	0.15	33,374	0.17	-11.33
coretel.net	30,136	0.15	29,400	0.15	-0.37
servidoresdns.net	30,129	0.15	29,040	0.15	0.84
atrivo.com	30,120	0.15	26,824	0.14	9.14
lakeheadu.ca	30,089	0.15	29,149	0.15	0.33
widexs.nl	30,002	0.15	29,860	0.15	-2.34
lnhi.net	29,708	0.15	28,460	0.15	1.46
primarydns.com	29,470	0.15	26,490	0.14	8.13
pa.net	29,371	0.15	28,820	0.15	-0.94
0.200.209	29,348	0.15	27,559	0.14	3.51
bellsouth.net	29,230	0.15	29,362	0.15	-3.24
gxn.net	29,230	0.15	30,694	0.16	-7.44
powweb.com	28,878	0.14	28,655	0.15	-2.05
hichina.com	28,330	0.14	27,046	0.14	1.81
b-one-dns.net	28,235	0.14	27,077	0.14	1.36
opentransfer.com	28,200	0.14	25,480	0.13	7.57
phatservers.com	28,135	0.14	26,652	0.14	2.61
net.ru	27,978	0.14	19,859	0.10	36.94
burst.net	27,663	0.14	28,385	0.15	-5.27
hopone.net	27,556	0.14	27,544	0.14	-2.76
fl.net.au	27,246	0.14	55	0.00	48050.29
3fn.net	27,195	0.14	27,963	0.14	-5.47
maxim.net	27,122	0.14	26,160	0.13	0.77
asmgi.com	27,119	0.14	26,038	0.13	1.23
amenworld.com	27,025	0.13	25,780	0.13	1.89
dion.ne.jp	26,959	0.13	26,392	0.14	-0.71
gldn.net	26,905	0.13	25,413	0.13	2.90
calpop.com	26,647	0.13	23,804	0.12	8.81
townisp.com	26,417	0.13	27,116	0.14	-5.31
rackforce.com	26,409	0.13	23,928	0.12	7.28
iomart.co.uk	26,180	0.13	26,485	0.14	-3.92
interware.hu	26,080	0.13	23,636	0.12	7.25
xs4all.nl	25,503	0.13	31,826	0.16	-22.11
uk2.net	25,471	0.13	26,163	0.13	-5.37
telia.com	25,334	0.13	25,587	0.13	-3.76
telus.com	25,251	0.13	20,066	0.10	22.31
hivelocity.net	24,834	0.12	17,274	0.09	39.74
fastservers.net	24,790	0.12	23,865	0.12	0.97
meganameservers.com	24,753	0.12	25,244	0.13	-4.69
kidc.net	24,708	0.12	24,543	0.13	-2.15
uslec.net	24,657	0.12	24,117	0.12	-0.63
elinuxservers.com	24,592	0.12	23,343	0.12	2.40
donhost.co.uk	24,570	0.12	24,052	0.12	-0.71
mcbone.net	24,496	0.12	24,086	0.12	-1.15
home.pl	24,490	0.12	26,838	0.14	-11.31
servepath.com	24,148	0.12	22,179	0.11	5.83
speakeasy.net	24,095	0.12	23,988	0.12	-2.37
vanion.com	24,044	0.12	24,122	0.12	-3.12
ciberlynx.net	23,933	0.12	23,229	0.12	0.14
novani.com	23,894	0.12	22,524	0.12	3.11
nauticom.net	23,678	0.12	21,444	0.11	7.32
webfusion.co.uk	23,664	0.12	23,707	0.12	-2.98
west-datacenter.net	23,621	0.12	23,483	0.12	-2.23
eurekanetworks.net	23,540	0.12	21,573	0.11	6.06
aitcom.net	23,486	0.12	23,439	0.12	-2.61
expedient.com	23,312	0.12	25,320	0.13	-10.51
ktc.com	23,281	0.12	23,210	0.12	-2.50
rcn.net	23,231	0.12	22,499	0.12	0.36
netnation.com	22,990	0.11	25,634	0.13	-12.83
bluegrass.net	22,938	0.11	21,070	0.11	5.82
demon.co.uk	22,832	0.11	22,563	0.12	-1.64
anonymous-servers.com	22,728	0.11	22,303	0.11	-0.95
hinet.net	22,546	0.11	23,100	0.12	-5.13
casablanca.cz	22,251	0.11	21,974	0.11	-1.58
netbenefit.co.uk	22,178	0.11	15,799	0.08	36.44
techmed-it.com	22,111	0.11	22,242	0.11	-3.37
jtlnet.com	22,073	0.11	21,477	0.11	-0.10
fastdns.net	21,964	0.11	22,018	0.11	-3.04
accelenet.net	21,829	0.11	24,398	0.13	-13.04
ip-plus.net	21,822	0.11	21,361	0.11	-0.70
tmag.de	21,633	0.11	21,559	0.11	-2.47
bt.net	21,429	0.11	21,012	0.11	-0.87
dakotacom.net	21,363	0.11	11,425	0.06	81.75
trouble-free.net	21,336	0.11	10,285	0.05	101.64
iweb-hosting.com	20,884	0.10	21,128	0.11	-3.92
ipipe.net	20,601	0.10	17,820	0.09	12.37
comcastbusiness.net	20,600	0.10	20,232	0.10	-1.03
affinity.com	20,551	0.10	16,926	0.09	18.02
mediatemple.net	20,519	0.10	19,271	0.10	3.49
aplushosting.com	20,354	0.10	18,294	0.09	8.14
corbina.net	20,345	0.10	20,351	0.10	-2.83
inet.it	20,329	0.10	19,753	0.10	0.03
quickclic.net	20,320	0.10	14,006	0.07	41.02
tera-byte.com	20,196	0.10	19,570	0.10	0.31
accentric.net	20,079	0.10	22,272	0.11	-12.37
untd.com	19,946	0.10	13,520	0.07	43.40
server-dns.com	19,802	0.10	19,674	0.10	-2.17
ikp.pl	19,593	0.10	17,786	0.09	7.07
ispdial.com	19,565	0.10	19,801	0.10	-3.96
nacamar.net	19,399	0.10	19,354	0.10	-2.58
metrocast.net	19,139	0.10	199	0.00	9248.14
sbcidc.com	19,115	0.10	19,075	0.10	-2.60
amaranth.net	18,919	0.09	18,076	0.09	1.73
voyager.net	18,895	0.09	18,907	0.10	-2.86
uunet.ca	18,790	0.09	18,461	0.09	-1.07
national-net.com	18,649	0.09	18,002	0.09	0.69
fast.net	18,547	0.09	18,283	0.09	-1.40
bluehost.com	18,501	0.09	16,431	0.08	9.44
easynet.co.uk	18,453	0.09	22,819	0.12	-21.40
telecity.net	18,350	0.09	11,605	0.06	53.69
mycyberhosting.com	18,326	0.09	19,689	0.10	-9.53

* 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.