Overview of services running on Port 137 UDP.
~519 Thousand IP addresses observed from May to December 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.

Servicename Product Version InfoOSDevicetypeCount Percent
netbios-nsMicrosoft Windows XP netbios-ssnWindows33006363.506
no match482749.288
netbios-nsMicrosoft Windows Mobile netbios-ssnWindows442528.514
netbios-nsSamba nmbdworkgroup: d256434.934
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: WORKGROUPWindows125022.405
httplighttpd1.4.1987841.69
netbios-nsSamba nmbdworkgroup: WORKGROUP74061.425
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: MSHOMEWindows30360.584
netbios-nsMicrosoft Windows netbios-ssnworkgroup: WORKGROUPWindows28760.553
netbios-nsSamba nmbdworkgroup: t19300.371
netbios-nsSamba nmbdworkgroup: P2612HWU17630.339
netbios-nsMicrosoft Windows netbios-ssnworkgroup: RAMOT-DOMAINWindows13260.255
netbios-nsMicrosoft Windows netbios-ssnworkgroup: MARALGWindows13180.254
netbios-nsMicrosoft Windows netbios-ssnworkgroup: UTPAWindows12120.233
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: NETOPSWindows XP11490.221
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: WORKGROUPWindows XP11090.213
netbios-nsMicrosoft Windows netbios-ssnworkgroup: GARMONARWindows9920.191
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: RAMOT-DOMAINWindows8540.164
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MARRANWindows XP6650.128
netbios-nsSamba nmbdworkgroup: P-2612HWU6100.117
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: TAU-CENTAURWindows6090.117
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: GESUMUSICWindows XP3770.073
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MARALGWindows XP3410.066
netbios-nsMicrosoft Windows netbios-ssnworkgroup: INNILMWindows3200.062
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: IGAYA2KWindows XP3010.058
netbios-nsMicrosoft Windows netbios-ssnworkgroup: NETOPSWindows2990.058
netbios-nsMicrosoft Windows netbios-ssnworkgroup: MARQNETWindows2960.057
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: NETOSWindows2770.053
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: GARMONARWindows XP2730.053
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: SYLLABUSWindows XP2510.048
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MATERWindows XP2470.048
netbios-nsMicrosoft Windows netbios-ssnworkgroup: TIANNETWindows2430.047
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MATHCOMWindows XP2420.047
netbios-nsNovell NetWare netbios-nsworkgroup: WORKGROUPNetWare2410.046
netbios-nsMicrosoft Windows netbios-ssnworkgroup: CSWindows2380.046
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MSHOMEWindows XP2300.044
netbios-nsSamba nmbdworkgroup: CANONWORK2230.043
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: AUECCWindows XP2160.042
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: HOMEWindows1880.036
netbios-nsMicrosoft Windows netbios-ssnworkgroup: SUHARASVRWindows1840.035
netbios-nsMicrosoft Windows netbios-ssnworkgroup: ATHLONWindows1840.035
netbios-nsSamba nmbdworkgroup: ANYWAY1680.032
netbios-nsMicrosoft Windows netbios-ssnworkgroup: T_OKAFUWindows1660.032
netbios-nsMicrosoft Windows netbios-ssnworkgroup: ZMAIN_HCP_AUSTWindows1640.032
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MARQNETWindows XP1620.031
netbios-nsApple Mac OS X netbios-nsworkgroup: WORKGROUPOS X1550.03
netbios-nsMicrosoft Windows netbios-ssnworkgroup: AUETECHWindows1540.03
netbios-nsMicrosoft Windows netbios-ssnworkgroup: AUE_GEOSCIWindows1500.029
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: CATYALTEWindows XP1480.028
netbios-nsMicrosoft Windows netbios-ssnworkgroup: HSAWindows1460.028
netbios-nsMicrosoft Windows netbios-ssnworkgroup: BELEARNINGWindows1460.028
netbios-nsMicrosoft Windows netbios-ssnworkgroup: CGROUPWindows1430.028
netbios-nsMicrosoft Windows netbios-ssnworkgroup: MANCANAWindows1330.026
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MSCSWindows XP1320.025
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: INNILMWindows XP1320.025
netbios-nsMicrosoft Windows netbios-ssnworkgroup: MSCSWindows1280.025
netbios-nsSamba nmbdworkgroup: MSHOME1100.021
netbios-nsMicrosoft Windows netbios-ssnworkgroup: PBFOXWindows1080.021
netbios-ssn1070.021
netbios-nsSamba nmbdworkgroup: NAS1010.019
netbios-nsMicrosoft Windows netbios-ssnworkgroup: ROSERWindows1010.019
socks5860.017
netbios-nsSamba nmbdworkgroup: PrintServer850.016
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: OVHWindows850.016
netbios-nsMicrosoft Windows netbios-ssnworkgroup: QUAPATWindows850.016
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: TIANNETWindows XP840.016
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: BELEARNINGWindows XP830.016
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: CGROUPWindows XP800.015
netbios-nsSamba nmbdworkgroup: RADIOLYNX790.015
netbios-nsSamba nmbdworkgroup: HOME690.013
netbios-nsSamba nmbdworkgroup: ATHLON680.013
netbios-nsMicrosoft Windows netbios-ssnworkgroup: JAMIRWindows680.013
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: SUHARASVRWindows XP660.013
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: AUETECHWindows XP650.013
netbios-nsMicrosoft Windows netbios-ssnworkgroup: MARRANWindows630.012
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: T_OKAFUWindows XP620.012
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: AUE_GEOSCIWindows XP620.012
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: HSAWindows XP610.012
netbios-nsSamba nmbdworkgroup: NET590.011
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: ROSERWindows XP590.011
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: MYGROUPWindows580.011
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: HS-WOEWindows570.011
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: KASIOUJIWindows XP560.011
netbios-nsSamba nmbdworkgroup: __SAMBA__550.011
netbios-nsSamba nmbdworkgroup: f550.011
netbios-nsSamba nmbdworkgroup: P500.01
netbios-nsSamba nmbdworkgroup: MYGROUP500.01
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: KM-NETPRINTERSWindows500.01
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: MANCANAWindows XP470.009
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: EFRDOMWindows XP450.009
netbios-nsSamba nmbdworkgroup: ZENTYAL-DOMAIN440.008
netbios-nsMicrosoft Windows netbios-ssnworkgroup: THCGWindows440.008
netbios-nsMicrosoft Windows netbios-ssnworkgroup: INAREKAWindows440.008
netbios-nsSamba nmbdworkgroup: OFFICE410.008
netbios-nsSamba nmbdworkgroup: LOCALHOST380.007
netbios-nsSamba nmbdworkgroup: NetPrinters370.007
netbios-nsSamba nmbdworkgroup: CPE370.007
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: PBFOXWindows XP370.007
netbios-nsMicrosoft Windows netbios-ssnworkgroup: TILLEWindows340.007
netbios-nsSamba nmbdworkgroup: KM-NetPrinters330.006
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: QUAPATWindows XP310.006
netbios-nsMicrosoft Windows netbios-ssnworkgroup: KM-NETPRINTERSWindows310.006
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: FLACWindows XP300.006
netbios-nsMicrosoft Windows netbios-ssnworkgroup: DOGARAHAWindows300.006
netbios-nsSamba nmbdworkgroup: INOP280.005
netbios-nsSamba nmbdworkgroup: IEXPRESS270.005
netbios-nsMicrosoft Windows netbios-ssnworkgroup: INFRAWindows260.005
netbios-nsSamba nmbdworkgroup: TOUR_CD240.005
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: FFEWindows XP240.005
netbios-nsMicrosoft Windows netbios-ssnworkgroup: CINASTWindows240.005
netbios-nsSamba nmbdworkgroup: PRINTSERVERS230.004
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: kgt3hmWindows230.004
netbios-nsMicrosoft Windows netbios-ssnworkgroup: EUROPEWindows230.004
netbios-nsMicrosoft Windows netbios-ssnworkgroup: CASTTWindows230.004
netbios-nsSamba nmbdworkgroup: Pl220.004
netbios-nsSamba nmbdworkgroup: IKSC220.004
netbios-nsSamba nmbdworkgroup: FREEBSD220.004
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: TELECOMWindows XP220.004
netbios-nsMicrosoft Windows netbios-ssnworkgroup: CATYALTEWindows220.004
http220.004
netbios-nsSamba nmbdworkgroup: DOMAIN210.004
netbios-nsSamba nmbdworkgroup: C210.004
netbios-nsMicrosoft Windows NT netbios-ssnworkgroup: KIEBACK-PETERWindows210.004
netbios-nsMicrosoft Windows XP netbios-ssnworkgroup: INAREKAWindows XP200.004
netbios-nsMicrosoft Windows netbios-ssnworkgroup: TODDWENWindows200.004
netbios-nsMicrosoft Windows netbios-ssnworkgroup: PANNEWindows200.004