Autonomous system
AS13588 PAYCHEX
Unclassified ARIN
Summary
Paychex
finance business enterprise
A /16 announced as thirty separate pieces, all under one netname, with not a single address answering a reverse lookup.
What it's used for
- A payroll and human resources processor's network. 27,904 addresses across thirty IPv4 prefixes, five observed BGP neighbours, and no IPv6 announced.
Notable
- Every announced prefix is a piece of
141.123, at sizes from a /19 down to /24s. - All of them carry the same netname,
PAYCHE-4, registered to the company. - The netname is the first six characters of the company name with a counter appended.
- Eighteen addresses were queried for reverse DNS and none returned a name.
Interesting
- Thirty routes where one would do costs the whole internet twenty-nine extra table entries, and it buys the company the ability to move any piece of its estate to a different upstream without touching the rest. With five upstreams and payroll deadlines that do not move, that is a trade the business would make again.
- A completely silent reverse zone across 27,904 addresses is a choice, not an omission at this scale. Nothing names a server, a site or a function, so an outsider mapping the estate gets thirty ranges and nothing else.
- The truncated netname with a counter is the registry's own template, and the counter reaching four means three earlier objects exist under the same abbreviation.
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 30 prefixes · 27.90K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 30 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13588- Registry name
- PAYCHEX
- Registrant
- Paychex Inc.
- Abuse contact
- jawatkin@paychex.com
- Registered
- 1999-07-12
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 34 with no ROA
- ROAs
- 0 authorising AS13588
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 34 announcements 10 other origin
- Route objects
- 2 naming AS13588
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 1,771 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