Autonomous system
AS13919 ALLDATA-NET01
Unclassified ARIN
Summary
ADS Alliance Data Systems
business enterprise
The netname writes out the parent allocation in full, so the record describes space the AS never announces.
What it's used for
- A data services company's network. 2,048 addresses across three IPv4 prefixes, six observed BGP neighbours, and no IPv6 announced.
Notable
- All three blocks carry netname
NET-205-144-48-0-20, registered toADS Alliance Data Systems, Inc. - The announced prefixes are
205.144.50.0/23,205.144.52.0/23and205.144.60.0/22, all inside the range that netname describes. - Nine addresses were queried for reverse DNS and one returned a name,
sdad3spam04.alldata.net.
Interesting
- The netname is the parent block written as an address and a prefix length with the punctuation swapped for hyphens. It means the whole allocation can be reconstructed from the name alone, and it also means the record describes four times the space that is actually routed.
- What sits between the announced pieces is held and unrouted. A company that takes a range this size and announces a third of it is keeping room to grow rather than returning what it has not used.
- The one hostname that answered names a mail filtering appliance, a site code and a two-digit index, which says there are at least three more of them that the sample never reached.
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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13919- Registry name
- ALLDATA-NET01
- Registrant
- ADS Alliance Data Systems, Inc.
- Abuse contact
- domain-contact@breadfinancial.com
- Registered
- 1999-09-15
- Last changed
- 2016-05-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 12 with no ROA
- ROAs
- 0 authorising AS13919
- ASPA
- no ASPA record
- IRR
- 50% registered · 6 of 12 announcements
- Route objects
- 2 naming AS13919
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 1,772 prefixes, as published 2026-10-15. 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