Autonomous system
AS5696 EXPRES
Unclassified ARIN
Summary
Express Scripts
enterprise healthcare legacy
EXPRES is Express Scripts, the pharmacy benefit manager headquartered in St. Louis, Missouri and now part of Cigna's Evernorth business. AS5696 is its corporate network.
What it's used for
- Carrying Express Scripts' own traffic — the systems behind prescription claims processing, mail-order pharmacy, and the member and pharmacy-facing services that go with them.
Notable
- An enterprise network, not a provider: the ~132,000 addresses here belong to the company's own infrastructure rather than to customers.
- Its upstreams include a DDoS-mitigation network alongside ordinary transit — a defensive posture you would expect from a company sitting on a very large volume of health and prescription data.
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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 69 prefixes · 132K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 69 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5696- Registry name
- EXPRES
- Registrant
- Express Scripts Incorporated
- Abuse contact
- lucas.blatherwick@evernorth.com
- Registered
- 2009-10-05
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 46 with no ROA
- ROAs
- 0 authorising AS5696
- ASPA
- no ASPA record
- IRR
- 100% registered · 46 of 46 announcements
- Route objects
- 56 naming AS5696
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 2026-10-20. 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