Autonomous system
AS10615 PAINEWEBBER-ASN
Unclassified ARIN
Summary
UBS AG (formerly PaineWebber)
enterprise legacy
PAINEWEBBER-ASN is now held by UBS AG. PaineWebber was the American brokerage that UBS bought in 2000 and folded into its wealth-management business; the brand is long gone from the market but survives here as the ASN's handle. The reverse DNS is unambiguous about who runs it today: sampled addresses resolve to cgbf-sh90-5005a.ubs.com and ibol18-bs.ibb.ubs.com.
What it's used for
RIS observes 60 IPv4 prefixes carrying 10,240 addresses, no IPv6, and 6 observed BGP neighbours. Sixty prefixes over ten thousand addresses averages out to about a /23 apiece, and the sample confirms it: 151.191.184.0/23, 161.239.224.0/23, 148.112.144.0/23, and dozens more of exactly that size.
That uniform /23 grid is the fingerprint of a bank's site network. Each office, branch, trading floor or data hall gets a fixed-size block from one of a few parent ranges, and the sites are announced individually so traffic to each can be steered across the handful of carriers the firm buys from. Six peers, ten thousand addresses, no customers: an enterprise, closed and multi-homed, not a provider.
Notable
The prefixes come from several distinct legacy ranges — 148.112, 151.191, 161.15, 161.239, 162.65 — which is what happens when a bank absorbs another bank. Address space is the last thing to be renumbered after a merger, and often it never is; a quarter-century after the acquisition, PaineWebber's blocks are still carrying UBS traffic under PaineWebber's ASN.
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
7 upstream, 0 downstream and 7 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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 17 prefixes · 10.24K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 17 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10615- Registry name
- PAINEWEBBER-ASN
- Registrant
- UBS AG
- Abuse contact
- abuse-network@ubs.com
- Registered
- 1997-10-06
- Last changed
- 2015-11-07
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- UBS
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 60 with no ROA
- ROAs
- 0 authorising AS10615
- ASPA
- no ASPA record
- IRR
- 100% registered · 60 of 60 announcements
- Route objects
- 90 naming AS10615
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 1,784 prefixes, as published 2026-10-19. 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