2606:db00:0:4fa::137

NetRange:       2606:DB00:: - 2606:DB00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
CIDR:           2606:DB00::/32
NetName:        DFW-DATACENTER
NetHandle:      NET6-2606-DB00-1
Parent:         NET6-2600 (NET6-2600-1)
NetType:        Direct Allocation
OriginAS:       AS30277
Organization:   DFW Datacenter (TMS-52)
RegDate:        2012-01-23
Updated:        2012-01-23
Ref:            https://rdap.arin.net/registry/ip/2606:DB00::

OrgName:        DFW Datacenter
OrgId:          TMS-52
Address:        1515 Round Table Dr
City:           Dallas
StateProv:      TX
PostalCode:     75247
Country:        US
RegDate:        2003-08-19
Updated:        2018-08-01
Ref:            https://rdap.arin.net/registry/entity/TMS-52

ReferralServer:  rwhois://72.9.144.30:4321

OrgAbuseHandle: DFWDA-ARIN
OrgAbuseName:   DFW Datacenter
OrgAbusePhone:  +1-214-256-3746 
OrgAbuseEmail:  sales@dfw-datacenter.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DFWDA-ARIN

OrgTechHandle: DFWDA-ARIN
OrgTechName:   DFW Datacenter
OrgTechPhone:  +1-214-256-3746 
OrgTechEmail:  sales@dfw-datacenter.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DFWDA-ARIN

Found a referral to 72.9.144.30:4321.