asn.dev

Autonomous system

AS26478 NOVARTIS-PHARMA

Unclassified ARIN

IPv4 addresses 1.81K 6 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 1 see address space

Summary

Novartis Pharmaceuticals

United States of America · AI-generated

pharmaceutical corporate business

The AS handle NOVARTIS-PHARMA is held by Novartis Pharmaceuticals.

What it's used for

  • The address space carries corporate infrastructure for the pharmaceutical giant, evidenced by netnames such as NOVARTIS-DMZ-US, US-NOVARTIS-20220912, and MX-NOVARTIS-20210419.
  • The AS announces 1808 IPv4 addresses across 6 prefixes while maintaining only 6 observed neighbours, a ratio indicative of an internal corporate estate rather than a transit or access network.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing Novartis AG contacts for NOVARTIS-DMZ-US, US-NOVARTIS-20220912, MX-NOVARTIS-20210419, and US-NOVARTIS-20190905.
  • The inventory includes two prefixes with different registrants: 205.181.102.0/24 is registered to Level 3 Parent, LLC, and 200.57.1.48/28 is registered to Operbes, S.A. de C.V., suggesting leased or legacy space.
  • The address inventory is finely subdivided into small blocks, consistent with site-by-site segmentation for a large multinational corporation.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

5 upstream, 0 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS54004Cablevision Lightpath LLC175
AS6461Zayo Bandwidth61
AS3300British Telecommunications Limited58
AS400317GoldConnect42
AS18734Operbes, S.A. de C.V.17

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 6 prefixes · 1.81K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS26478
Registry name
NOVARTIS-PHARMA
Registrant
Novartis Pharmaceuticals
Abuse contact
abuse.contacts@novartis.com
Registered
2002-09-25
Last changed
2021-09-17
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
67% valid · 4 valid, 2 with no ROA
ROAs
5 authorising AS26478
ASPA
no ASPA record
IRR
83% registered · 5 of 6 announcements
Route objects
9 naming AS26478

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 1,782 prefixes, as published 2026-10-16. 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

Cross-check