Autonomous system
AS4249 LILLY-AS
Unclassified ARIN
Summary
Eli Lilly and Company
enterprise legacy
Autonomous System 4249 (LILLY-AS) is registered to Eli Lilly and Company, the pharmaceutical manufacturer headquartered in Indianapolis, Indiana.
What it's used for
- Corporate network connectivity for Lilly's global operations: offices, research sites, and manufacturing facilities.
Notable
- Corporate address space, not consumer space. An IP here is a Lilly system or a Lilly employee behind the company's network edge.
- Lilly is a legacy holder of an unusually large IPv4 allocation inside the
40.0.0.0/8range, and this AS originates several million addresses out of it. That is far more address space than the company's headcount would suggest, and is a reflection of how the earliest allocations were sized, not of network size today.
Interesting
- Pharmaceutical and industrial firms were among the earliest commercial holders of large IPv4 blocks, having connected in the era when a company could simply ask for a Class A-sized range.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 213 prefixes · 3.34M addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 213 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS4249- Registry name
- LILLY-AS
- Registrant
- Eli Lilly and Company
- Abuse contact
- tkalis@lilly.com
- Registered
- 1995-01-11
- Last changed
- 2022-12-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 226 with no ROA
- ROAs
- 0 authorising AS4249
- ASPA
- no ASPA record
- IRR
- 100% registered · 226 of 226 announcements
- Route objects
- 303 naming AS4249
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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