Autonomous system
AS20249 AS20249 - Jefferies LLC
Unclassified ARIN
Summary
Jefferies
business finance corporate
AS20249 is operated by Jefferies LLC, a global investment banking and capital markets firm.
What it's used for
- The address space is registered under the netname
JEFCO2forJefferies LLC; Network Engineering, indicating an internal corporate network for the financial services company. - The AS announces 18,688 IPv4 addresses across 20 prefixes, with 21 observed neighbours. This ratio of moderate address space to a significant number of peering partners suggests a corporate network with multiple sites or a need for diverse connectivity, rather than a pure transit provider or residential ISP.
Notable
- Registrants are consistent with the announcer, with
Jefferies LLCholding the majority of the US-based space andJefferies International Limitedholding a small UK-based block (185.55.134.0/23). - The address inventory is heavily concentrated in the
169.196.0.0/16range, with one outlier in185.55.134.0/23, reflecting the company's global footprint.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
20 upstream, 0 downstream and 20 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-17, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 20 prefixes · 18.69K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 20 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS20249- Registry name
- AS20249
- Registrant
- Jefferies LLC
- Abuse contact
- network_engineering@Jefferies.com
- Registered
- 2019-07-08
- Last changed
- 2020-10-06
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 98% valid · 52 valid, 1 with no ROA
- ROAs
- 46 authorising AS20249
- ASPA
- no ASPA record
- IRR
- 91% registered · 48 of 53 announcements 1 other origin
- Route objects
- 48 naming AS20249
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere