AS40016 MESIROW FINANCIAL HOLDINGS, INC. 🇺🇸 US

Announcing 2 prefixes, seen at the RIS collectors.

IPv4 prefixes

512 (2 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS40016
Name: MESIROW FINANCIAL HOLDINGS, INC.
Organisation: MESIROW FINANCIAL HOLDINGS, INC.
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2006-06-07

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 2 no ROA (100.0%)

Whois

Fetched from whois.arin.net

ASNumber:       40016
ASName:         MESIROW
ASHandle:       AS40016
RegDate:        2006-06-07
Updated:        2026-09-25
Ref:            https://rdap.arin.net/registry/autnum/40016

OrgName:        MESIROW FINANCIAL HOLDINGS, INC.
OrgId:          MFH-7
Address:        350 N CLARK ST
City:           CHICAGO
StateProv:      IL
PostalCode:     60610
Country:        US
RegDate:        2006-05-18
Updated:        2026-09-25
Ref:            https://rdap.arin.net/registry/entity/MFH-7

OrgTechHandle: RASHE19-ARIN
OrgTechName:   Rashev, Kamen
OrgTechPhone:  +1-312-978-9212
OrgTechEmail:  kamen.rashev@mesirow.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RASHE19-ARIN

OrgAbuseHandle: RASHE19-ARIN
OrgAbuseName:   Rashev, Kamen
OrgAbusePhone:  +1-312-978-9212
OrgAbuseEmail:  kamen.rashev@mesirow.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RASHE19-ARIN

OrgTechHandle: PLRJ-ARIN
OrgTechName:   rhone jr, perry l
OrgTechPhone:  +1-312-595-8464
OrgTechEmail:  perry.rhone@mesirow.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PLRJ-ARIN

OrgAbuseHandle: PLRJ-ARIN
OrgAbuseName:   rhone jr, perry l
OrgAbusePhone:  +1-312-595-8464
OrgAbuseEmail:  perry.rhone@mesirow.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PLRJ-ARIN