Autonomous system
AS21660 BAXALTA
Unclassified ARIN
Summary
Baxalta
pharmaceutical corporate business
The AS handle BAXALTA is operated by Baxalta Incorporated.
What it's used for
- The address space carries corporate infrastructure for a pharmaceutical company, evidenced by netnames such as
US-BAXALTA-20150225,BAXALTA-AP, andBAXALTA-IPV4. - The inventory consists of 7 IPv4 prefixes covering 4352 addresses, with 6 observed routing neighbours, indicating a small internal corporate estate rather than a transit or access network.
Notable
- Registrants largely align with the announcer, including
Baxalta IncorporatedandBAXALTA US INC, though one prefix (63.244.0.0/22) is registered toMillennium Pharmaceuticals, Inc.under the netnameMPINET. - Baxalta completed a combination with Shire plc in 2016, creating a global pharmaceutical entity that subsequently became part of Takeda.
- The address inventory is finely subdivided into seven distinct prefixes, consistent with site-by-site segmentation for a large 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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
6 upstream, 0 downstream and 6 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 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 4.35K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21660- Registry name
- BAXALTA
- Registrant
- Baxalta Incorporated
- Abuse contact
- atta.meer@takeda.com
- Registered
- 2015-01-16
- Last changed
- 2015-01-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 27% valid · 3 valid, 8 with no ROA
- ROAs
- 3 authorising AS21660
- ASPA
- no ASPA record
- IRR
- 64% registered · 7 of 11 announcements
- Route objects
- 11 naming AS21660
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 1,779 prefixes, as published 2026-10-23. 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