Autonomous system
AS18113 PFIZER-SG-AP Pfizer Pte Ltd Singapore dual homed
Unclassified APNIC
Summary
Pfizer
business corporate pharma internal
PFIZER-SG-AP is the autonomous system for Pfizer Pte Ltd, the Singapore entity of the global biopharmaceutical corporation.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by registrant netnames
WRNL-PDVS-1andUPJassociated withPfizer Inc. - With 1792 IPv4 addresses across 4 prefixes and only 2 observed neighbours, the inventory represents a finely subdivided internal corporate estate rather than an access or transit network.
Notable
- All RDAP registrants are listed as
Pfizer Inc., which aligns with the announcerPfizer Pte Ltdas a subsidiary of the same parent organization. - The address inventory consists of three /23 blocks and one /24 block, all located in Singapore, indicating a consolidated regional presence for the company's operations.
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 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 4 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18113- Registry name
- PFIZER-SG-AP
- Registrant
- Pfizer Pte Ltd
- Abuse contact
- robert.azar@pfizer.com
- Registered
- 2008-09-04
- Last changed
- 2020-07-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 6 with no ROA
- ROAs
- 0 authorising AS18113
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 20 naming AS18113
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 1,781 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