b09f51b5_HCP_Overview__Support____Cisco__DHCP_Option_Name
[DHCP Option Code] 44 [Description] Specifies a list of RFC 1001/1002 NetBIOS name servers listed in order or preference. [DHCP Option Name] 
NetBIOS over TCP/IP name server option
IP Addressing: DHCP Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000) - DHCP Overview [Support] - Cisco