Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS31747

Announcement observedARIN

BlackRock Financial Management, Inc. · BLACKROCK-FINANCIAL-MANAGEMENT-2

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/28/2026, 01:50:58Snapshot expired

View network topology RDAP registration

ASN: AS31747
Registration country: United States
Name: BlackRock Financial Management, Inc.
Abbreviation: BLACKROCK-FINANCIAL-MANAGEMENT-2
Registration date: 1/24/2007, 21:01:05
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
199.242.0.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
199.242.4.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
199.242.5.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
199.242.6.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.12.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.13.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.134.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.135.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.136.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.137.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	10/10/2026, 16:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.138.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	10/10/2026, 16:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.139.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	10/10/2026, 16:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.14.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.142.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.143.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.144.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.145.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.147.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.2.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.22.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.23.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.3.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.33.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.66.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.67.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.68.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.69.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.72.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid
69.52.73.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/27/2026, 16:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: BlackRock Financial Management, Inc.
RIR: ARIN
Registration country: United States
Registration date: 1/24/2007, 21:01:05
Abuse contact: network-abuse@blackrock.com

Snapshot trend

10/28/2026, 01:50:5829 v40 v610 Upstream · 0 Uncertain

10/13/2026, 10:58:3629 v40 v69 Upstream · 0 Uncertain

10/2/2026, 10:21:4126 v40 v612 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn