174.139.156.0/24

NetRange:       174.139.152.0 - 174.139.159.255
CIDR:           174.139.152.0/21
NetName:        KRYPT
NetHandle:      NET-174-139-152-0-1
Parent:         VPLSNET (NET-174-139-0-0-1)
NetType:        Reassigned
OriginAS:       AS35908
Customer:       Krypt Technologies (C02953801)
RegDate:        2012-03-30
Updated:        2012-03-30
Ref:            https://rdap.arin.net/registry/ip/174.139.152.0

CustName:       Krypt Technologies
Address:        1100 North Market
City:           Sacramento
StateProv:      CA
PostalCode:     95834
Country:        US
RegDate:        2012-03-30
Updated:        2012-03-30
Ref:            https://rdap.arin.net/registry/entity/C02953801

OrgTechHandle: TME68-ARIN
OrgTechName:   Mektrakarn, Ted 
OrgTechPhone:  +1-213-406-9000 
OrgTechEmail:  Ted@vpls.net
OrgTechRef:    https://rdap.arin.net/registry/entity/TME68-ARIN

OrgTechHandle: VPLSA-ARIN
OrgTechName:   VPLS-ARIN
OrgTechPhone:  +1-888-365-2656 
OrgTechEmail:  abuse@evocative.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VPLSA-ARIN

OrgAbuseHandle: VPLSA-ARIN
OrgAbuseName:   VPLS-ARIN
OrgAbusePhone:  +1-888-365-2656 
OrgAbuseEmail:  abuse@evocative.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/VPLSA-ARIN

OrgNOCHandle: NETWO813-ARIN
OrgNOCName:   Network Engineering
OrgNOCPhone:  +1-866-599-9593 
OrgNOCEmail:  admin-arin@vpls.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO813-ARIN

Found a referral to vault.krypt.com:4321.