Top 1000 reverse DNS names observed from May to October 2012.
To get raw lists of the data go to Download. For an explanation of what this data is and how it was obtained, see Paper.

Count Domain TLD
61327865nejp
34434270bbtecnet
30352347comcastnet
27949325myvzwcom
24919353rrcom
22117491sbcglobalnet
18639539telecomitaliait
17480504verizonnet
16467453combr
16378853gecom
15743176spcsdnsnet
15081211comcn
14023982t-dialinnet
13421570commx
13064336hinetnet
12269040wanadoofr
11352152bellsouthnet
11114780netbr
10695503attdnscom
10487010coxnet
10147974sfrnet
9296921rima-tdenet
9161391level3net
8659604netau
8414079virginmediacom
8041362qwestnet
7862657comau
7686311proxadnet
7132406chartercom
6882953comtr
6639917mycingularnet
6456112couk
6315919netar
6039582btcentralpluscom
5819628surfnetinvalid
5747743aolcom
5415758comar
5300554t-ipconnectde
5144311akamaitechnologiescom
5075956coza
4986691orjp
4943761pacbellnet
4917871nyadsl
4805239arcor-ipnet
4759545skycom
4722172teliacom
4468806in-addrarpa
4349950netco
3886744optonlinenet
3815753comcastbusinessnet
3718831nettw
3547518hpqcorpnet
3466712adjp
3462702rogerscom
3386516tpnetpl
3306429netmx
3269708mediawaysnet
3234936coth
3040810onocom
2934950netin
2870026swbellnet
2830507netcn
2795453bhnnet
2726768nortelnetworkscom
2671571bellca
2660843embarqhsdnet
2641481windstreamnet
2604171kpnnet
2459895frontiernetnet
2454591netil
2413925armymil
2410295as9105com
2395361ziggonl
2355508fastwebnetit
2316458qscde
2292220uunet
2262255as13285net
2219062amazonawscom
2208100telusnet
2157057ameritechnet
2151484bluewinch
2124275pldtnet
2085821shawcablenet
2055912cantvnet
1975585videotronca
1970114sxcn
1956100acuk
1946055xonet
1861477telenetbe
1835938jazzteles
1835794belgacombe
1831689direct-adslnl
1804773comtw
1787906conz
1779566tele2se
1752590superkabelde
1735969rdsnetro
1723302tedatanet
1710551alltelnet
1710111comsg
1638720bboxfr
1635212netid
1601126netvigatorcom
1564844teledk
1557944comunitelnet
1544415algxnet
1544262mindspringcom
1538580corbinaru
1534824airtelbroadbandin
1517763telepacpt
1504602clearwire-wmxnet
1480141movistarcl
1472220ertelecomru
1456552alicedslde
1448320fetnetnet
1395051moperanet
1384652netcabopt
1382451vodafonede
1377444ctinetscom
1376013bezeqintnet
1344606mchsicom
1340667ukrtelnet
1335378bredbandsbolagetse
1279316vtrnet
1271571acjp
1270370chellopl
1260512suddenlinknet
1254321btopenworldcom
1250794tiscaliit
1233721netpl
1212599otenetgr
1209590unitymediagroupde
1206570vodafoneit
1198461wanadoonl
1197069theplanetcom
1186445netua
1168504centurytelnet
1165172pluspl
1154608numericablefr
1137944hichinacom
1129656covadnet
1127044chellonl
1118032insightbbcom
1108821orangees
1086195totbbnet
1064823axtelnet
1063482usdagov
1061573as43234net
1027882dslnet
1024914hpcom
997152netnz
990868coin
978936inetfi
974286iolcz
962759dnainternetfi
943765hispeedch
938633commufajp
935705edutw
916601yahoocom
910176kbtelecomnet
901716netve
896072rasananet
893139softlayercom
887889tdsnet
884385t-comhr
874828telenormobilno
868423attnet
864275centertelpl
858805planetnl
854558holgr
852927nuvoxnet
842986elisa-laajakaistafi
838619teletuit
838320upcbroadbandcz
833418xs4allnl
811092mcleodusanet
794977netuy
771910eduie
741592onlineno
736837wayportnet
725124net24it
721911telekomhu
720987comhemse
719633telekomat
702760vodafonein
701991trese
701943sifynet
701464comhk
700940kabel-badenwuerttembergde
686196starbandnet
685475tele2ru
674930versatelnl
667969prservnet
658575eduau
648071cgocablenet
637459direcwaycom
634696cncnet
632321nasagov
631734t-mobilepl
628546uqwimaxjp
625354twtelecomnet
619131broadbandhu
618279adslplusch
615425liberoit
615305telenorse
612053viettelvn
598675play-internetpl
597410albacomnet
591475wideopenwestcom
588177secureservernet
565097cableonenet
563843telekomrs
553851direcpccom
553658bresnannet
550481cybercitydk
547494avangarddslru
545067compl
544144a1net
530216inodeat
525934vdcvn
522097satnetnet
521738versanetde
520721getinternetno
515203hetnetnl
511047netbynetru
501566fedus
496914cnru
496282eircomnet
495250dreicom
494277cavtelnet
492504inetiapl
490366rcncom
479171ziggozakelijknl
478859ewe-ip-backbonede
478568t-comsk
476196xinvalid
472263forthnetgr
471074nextgentelcom
466445surferat
458790comua
457031mundo-rcom
455091netpk
453481wildbluenet
450994euskalteles
443887onnet
442149club-internetfr
435422mtu-netru
434278beamtelenet
432649netuk
428436eastlinkca
427823ztomycom
427105cojp
425437sparqnetnet
424834fusenet
423123your-serverde
421694vodafonept
421634knologynet
420540nationalcablenetworksru
419590netdo
417601zebralt
415639vectranetpl
411848sonicnet
404730yotaru
404638telfortnl
402956moldtelecommd
402441telepacificnet
399503usmcmil
399241ptdnet
395710netgt
392890midconet
390969navymil
390451netmy
389558acedatacentercom
387815netae
387713mmpl
383487estpakee
382146telenordk
379703elisa-mobilefi
377092cdino
374253netcomno
374052lysenet
373531ntlinet
373229usbrgov
370234netcolognede
368163mtsallstreamnet
366718volianet
366404completelnet
366254btc-netbg
359426plusnet
357901eurotelcz
357851telnornet
351558proximusbe
348270prioritytelecomnet
346066ciscocom
344078airtelin
336100entelpcscl
331782speakeasynet
330479upcnl
319028smartonecom
317886tele2at
314065taiwanmobilenet
312488pccwglobalnet
312323kyivstarnet
311150triolannet
308560skca
307977abovenet
307487as47377net
307349netph
305401bashtelru
304671snetnet
303030transedgecom
301784intercablenet
301559entanet
298407telstranet
296874zoominternetnet
293269mycosmosgr
290971ntlcom
290536webspeeddk
290187oleanefr
286906cndatacom
283668iusacellnet
281788mobitelsi
281417wateennet
281370tmczcz
281035siolnet
280471alltelenet
278292compy
276887myfairpointnet
273489telenorcom
273206tele2de
272871caus
270639netma
269343bredband2com
266551itscomjp
266517telecablees
265710bbiqjp
264141onvolnet
263720comcy
263375online-agenet
261676sl-laajakaistafi
261543sbbrs
257931tele2adsldk
257707dslextremecom
257349wlms-broadbandcom
256368t-onlinehu
256149next-genro
2542113dk
254169dbd-ipconnectnet
252070netsa
250290gridnet
249841spacenetcom
249808gcinet
249697hondacom
249043tesconet
248926umnedu
248191pipexcom
247794alabanzacom
246830ctmnet
246732scarletbe
245634bahnhofse
244737disamil
242590teksavvycom
240981vzbicom
240972tellasgr
240338megapathnet
240116novispt
239761onecommunicationsnet
236832m-zonejp
236463telstraclearnet
236236broadviewnetnet
235465slbcom
234575nettt
233594kddhcp
233588osdmil
233476tiecl
230971propagationnet
230108telianet
230006spdopru
229737nettr
229690lightpathnet
227929digikabelhu
226072comuy
226064ntelosnet
225921telstraglobalnet
225050grandenetworksnet
224789dslgbcom
224244rtru
223562umichedu
222454netni
222128comve
218796bbexcitejp
218371telconetnet
218301mobistarbe
218299telefonicanet
214977onlinenl
213948imsbizcom
210091cloud-ipscom
209383glocalnetnet
208935netvisaopt
208849mgtsby
208029tdcnet
206514mts-nnru
205356bhntampacom
204661allstreamnet
203634ontelecomsgr
201030netpe
198277novotelecomru
197801atlanticbbnet
195879cnccn
194880cytagr
193591hknet
193083comeg
193069utgge
192081acza
191352cgocableca
189633hostnocnet
189445educn
189378tktelekompl
188925stofanetdk
187922iolit
187447nile-onlinenet
187030cokr
186746utexasedu
186527acat
186008birchnet
184705dndca
183236superonlinecom
181542onca
180881eastern-telecom
180656lillycom
180133kpn-gprsnl
180107mitedu
180057mdsg-pacwestcom
179781dotgov
179005simobilnet
178417qwertyru
178388prtcnet
176593murphxnet
176520choiceonenet
175765orangeat
174204fptvn
173509skntru
173454arrownetdk
173441acnz
173238barak-onlinenet
172162veetimecom
172085euteliait
171768coltnet
171406globetrotternet
170989chellosk
170926afmil
170145kuzbassnet
169447abru
1674852iijnet
166167tricomnet
164524vtxch
164183vodafonehu
163434alternet
162972cocr
162821casematelecomnl
162741romtelecomnet
161730radiantnet
161692chinaunicomcom
161003virginmedianet
160740bjtelecomnet
159565stvru
159237chellono
158757abca
158167net-htpde
158164niftycom
157768mnet-onlinede
156609j-cnetjp
155995comco
155751datafoundrycom
154717htvfi
154446metrocastnet
154290cebridgenet
153944airmailnet
153923pavlovmediacom
153704cablesurfde
153333firstcommcom
153211gaolandnet
152951as5587net
152737fullratedk
152188t-2net
151925internlnet
151893ufanetru
151863netec
151528consolidatednet
151246o1com
150823zeelandnetnl
150483upennedu
150470gogridcom
149781vgregionse
149500govar
149337clearwire-dnsnet
148983omsknetru
148725columbiaedu
148116ubiquityserverscom
147712primusca
147528att-inccom
147057atginet
146479starnetmd
145973csccom
145965telenetru
145030wcgnet
144525icpnetpl
144376crust-rnet
143740netikkafi
142872comporiumnet
142422m-onlinenet
142323tulipconnectcom
142258dlamil
141939kryptcom
141901cableondanet
141865orus
141309coge
138521ussignalcomnet
138451buckeyecomnet
138345uslecnet
138181alcatelcom
137943zsttknet
137567bluecomno
137474podacz
137346wxnznet
137062fibernethu
137061liwestat
136944wavecablecom
136676netinsnet
134892utahedu
134825solconnl
134725orangesk
134621indianaedu
133829netth
133445swisscomdatach
132918usgsgov
132890txus
132862stsnnet
132656notconfigured
132561skylogicnetcom
132071rwth-aachende
132054youbroadbandin
131822washingtonedu
131556surewestnet
130989netsg
130242vodafonecz
129913chubbcom
129902skylinkru
129734telenorhu
128985ptlu
128793telecomsk
128589chebnetru
127361wiscedu
127358dartyboxcom
126667skanovacom
126581mitreorg
126359ntlworldie
126312kievua
126061meganetlt
126013hydrocom
125844jzadsl
125578ubiquityio
125438ttnnet
125379casecorpcom
125333cypresscomnet
124936syntegracom
124826mexnejp
124648kommuneno
124601xnethr
124517cornelledu
124333nbca
124082banetele-custcom
124052optimuspt
123148rookdnscom
122596choopanet
122352fcnbdcom
122035invitelhu
121956distributelnet
121909gannettcom
121757combo
121704btnet
121423brutelebe
121372avtlgru
121073hacn
121045as2116net
120943is74ru
120670hosteuropede
120521edbcom
120301edutr
120254vologdaru
119604nexgnet
118540ovhnet
117964dreamhostcom
117856eftelcom
117719uncedu
117382bcca
117261acsalaskanet
116914coltfrancecom
116858uclaedu
115430govau
115125tdcsongse
114944dslavangardru
114081vega-uanet
113954hawaiiantelnet
113616e-ntnet
113001visicom
112705tdcmobildk
112384popsitenet
112365coopnet
112203harvardedu
111407epixnet
111380o2ispcz
111321uciedu
110950ainanet
110912comjo
110879msuedu
110849alicenl
110829newskiesnet
110734ldmicom
110455crowleypl
110200ownitse
109747buedu
109611agilentcom
109545centurylinkservicesnet
109354infuturoit
109286psuedu
109054iberbandaes
108875ltdomainscom
108754wifirstnet
108480soessu
108431ipv4ilinknet
108088bsnlin
107978unisyscom
107319ackr
106506bkkbno
106446stanfordedu
106343leasewebcom
106317vsiru
106206lrtclt
106023hvanl
105973fiberbitnet
105630tele2no
105157enanet
104924mnus
104903iplannetworksnet
104837donpacru
104760hostingua
103621cogentcocom
103491bellaliantnet
103310skybeamcom
103236njus
103110ngiit
103015unetcz
102529kabsiat
102093icenet
102072erdveslt
102054cablecomch
102034berkeleyedu
101698kpn-euroringsnet
101412linodecom
101410krasnetru
100763comph
100175uiucedu
100072ilus
99786as15444net
99596ifxnetworkscom
99521cdpnetiapl
99218uprrcom
99142atnetru
99141kcomcom
98759dyxnetcom
98739siwnetnet
98468newsouthnet
98403iowatelecomnet
98379ip-poolcom
98073osnanetde
97703lipetskru
96931acil
96039zootjp
95813networktelnet
95370mpgde
95233gatechedu
95173versatelnet
95053hansenetde
95036salzburg-onlineat
94786simnetis
94609mcgillca
94273grouptelecomnet
93967netartpl
93867centennialprnet
93755apogeenetnet
93583pittedu
93321enttw
93209servepathcom
92871academicafi
92849iskonhr
91919teolnet
91768acbe
91724veroxitynet
91049oraclecom
90845ohio-stateedu
90794onenetan
90774cous
90511coke
90271tusmobilsi
89516ncsuedu
89502fsuedu
89304fcomch
88853netlb
88749freedom2surfnet
88708logixcomnet
88706fu-berlinde
88661qcca
88323crnagoranet
87961utorontoca
87781mcdcom
87556bigpondcom
87168pentagonmil
87103edupl
87084wius
86935modulonetfr
86897doegov
86848ubcca
86785airbandnet
86650illinoisnet
85661parsonlinenet
85410satcom-systemsnet
85391greench
85225northwesternedu
85174uscedu
85058broadstripenet
84931uunetbe
84853xplornetcom
84820gsagov
84732teragonet
84637tamuedu
84469netba
84460verizon-gninet
84414nacnet
84346powernetbg
84333digisnet
84132earthlinknet
84112telecolumbusnet
84063caiwaynl
83865rionetcz
83534uicedu
82729kabelbwde
82723csloxinfonet
82681ibercomcom
82430comz
82396xlhostcom
82355kielnetnet
82294astralro
82222ecutelnet
82161amisnet
82064bwcru
81880colocationamericacom
81853tmodnsnet
81700tele2hr
81557edelkeynet
81507emtee
81256comni
80626cncnetnet
80507teleport-iabgde
80156mundivoxcom
80114tele2lt
79760as8401net
79698spronet
79610purdueedu
79576mpowercomnet
79540umdedu
79513ucsfedu
79368udeledu
79353paltelnet
78839hawaiiedu
78537cablebgnet
78228bluehostcom
78192tudelftnl
78191as44574net
78009direcpathcom
77931slovanetsk
77794maximnet
77609newwavecommnet
77574maxnetir
77486ba-dsgnet
76854guamnet
76276telefonica-canet
75918comstar-rru
75904peoplenetua
75387kpnqwestit
75229asianetcomnet
75187nctvcom
74978steadfastdnsnet
74879uchicagoedu
74776hacnc
74104opaltelecomnet
73536attcom
73517cablelynxcom
73362yaroslavlru
73155nerimnet
73083virginiaedu
72615dscgacom
72474commk
71793comxnetdk
71671xdslis
71625t-umtshu
71453khakasnetru
71277telianetdk
71209tele2nl
71180bluetonecz
71134pluscom
70986neus
70714tmcedu
70524tulanet
70265tomsknetru
70255combd
70088cernch
69657mclinkit
69624cgateslt
69519acanacnet
69355sccoastnet
69329ipnxtelecomscom
69281everestkcnet
69085mediaworksitnet
69028omkcru
68967ualbertaca
68709mymmodecom
68603sntru
68476zappmobilero
68475starmanee
68377iupuiedu
68333sltlk
67882twcablecom
67722rogerstelecomnet
67558flatratedk
67417aussiebbnet
67412kansasnet
67400ethzch
67261uuse
67261asterpl
67240magnetie
67218harriscom
67034crystonese
67032bouyguestelecomcom
67015paetecnet
66933nihgov
66849uiowaedu
66792ntebredbandno
66766nvus
66670baltnetru
66546airtelnet
66539chelsu
66457scnetnet
66392telebecinternetnet
66317privatednscom
66290scarletnl
66225lstnnet
66006ucredu
65962ipbna
65882quicknetnl
65861onlyfr
65823mtsam
65624irishbroadbandie
65591worldinternetworkcorporationcom
65564vodafone-netde
65560govza
65425idus
65289telemachnet
64961wi-tribeph
64958edpnetnet
64904psdschoolsorg
64867alcatelfr
64805risqnet
64729sibirtelecomru
64599oclcorg
64552perkinelmercom
64434jdrpcom
64409gunet
64383health-partnersorg
64301psmidccom
64249wavenetat
64239popwifiit
642023unet
64146bycustomer
64126ceridiancom
64104lottomaticait
64096crestar-energycom
64088dnafinlandfi
63979gulfca
63918transtelconet
63889163ppp
63866cwjamaicacom
63847attcomputecom
63846threembbie
63750bluenet
63727routitnet
63610darpamil
63583amerhondacom
63516ecotelnet
63470xmissioncom
63408promedicaorg
63400wcomnet
63281intelsatcom
63273tldpl
63222skatteverketse
63184udmnet
63164kdpix
63132loralcom
63072dolsatpl
6305298128
63048atexcom
63025doubleroutejp
63021nucom
62999urscorpcom
62962metronetis
62892orelru
62858pixarcom
62826yaleedu
62792muscedu
62770acumenassociatescom
62762eduroamersnl
62715telenet
62698gcuedu
62689easynetnet
62686unmcedu
62605ptcommru
62588glaslokaalnl
62567cloud9net
62565onuedu
62563coil
62558ncdnetnet
62557armstrongedu
62553amcnl
62494schibstedse
62493tellabscom
62486vptvn
62454koerberde
62446atkcom
62431orangearmeniaam
62397oatccom
62371zgrpnet
62331video-broadcastat
62318asretelecomnet
62297windrivercom
62262hostingcom
62244jmuedu
62142wittenbergedu
62104lncn
62078bigpipeinccom
62052uncwedu
62043uncannynet
62031optinethr
61958polir
61875xilinxcom
61850umdnjedu
61819euroringsnet
61790startca
61772medtroniccom
61759csunedu
61758bbservnl
61749novodk
61734gnbca
61723valmetcom
61710inwindit
61612ixosde
61577bartgov
61538odessaua
61522homedepotcom
61515utpaedu
61512dvoiscom
61504humberca
61480interedu
61398cybernetch
61371elonedu
61365netcom
61113cohorg
61091sargentlundycom
61078uaslpmx
60914pnnlgov
60852turknet
60836akado-uralru
60780utmbedu
60746telemachba
60654ispfabrieknl
60600kdadsl
60600dukeedu
60543accesscommca
60492maybespoofed
60410asuedu
60303comvn
60259qualcommcom
60256epricom
60214planetatc
60158olemissedu
60071mecnetnet
60060radiocomro
60026vtedu
59930nsfgov
59856sjsuedu
59786yacom