4Access Communications — 00:13:CF (MA-L)

A MAC address starting with 00:13:CF belongs to 4Access Communications, a small Chicago-based company, and typically appears on point-of-transaction or payment hardware built by that firm rather than on general-purpose consumer electronics.

The IEEE MA-L registration lists the registrant as "4Access Communications" at 1 N. LaSalle St., Chicago, IL 60602, US. That address matches, almost exactly, the address on file for 4Access Communications Co's two SEC Form D exempt-securities filings (March 2010 and August 2010): One North LaSalle Street, Suite 2015, Chicago, IL 60602. The match is strong independent corroboration that the OUI registrant is this specific company rather than an unrelated same-named entity.

4Access Communications Co is a small private firm, founded 2001, with roughly ten employees, classified under "Other Technology" in its SEC filings. The company describes itself as a provider of point-of-transaction systems producing payment solutions for the point-of-sale industry — consistent with a company that would need a registered MAC prefix for networked payment terminals.

Only one IEEE OUI assignment (00:13:CF) was found for this company; no second MA-L, MA-M, MA-S, or CID block turned up in the registries checked. The company's own site could not be independently verified in detail (a fetch attempt failed on a TLS certificate error), and no CVE, security advisory, or malware association naming this company or prefix was found as of an August 2026 search.

Device class

Point-of-transaction / payment terminal hardware, per the company's own self-description

Registrant

4Access Communications Co, Chicago, IL, US

OUI block

00:13:CF (MA-L, single IEEE assignment)

Founded

2001, per SEC Form D filings

Company size

Approximately 10 employees, per company-profile aggregator data

Address corroboration

SEC Form D filing address (One North LaSalle St, Suite 2015, Chicago, IL 60602) closely matches the IEEE registry address

Security history

No CVE or advisory found as of an August 2026 search

IEEE assignment

MA-L 00:13:CF → "4Access Communications", 1 N. LaSalle St. Chicago IL US 60602 [Confirmed] — the IEEE MA-L registry 0013CF

Registry / block size

MA-L (24-bit OUI); single prefix assignment found, no MA-M/MA-S/CID sub-blocks [Confirmed] — the IEEE MA-L registry (no 0013CF row in the IEEE MA-S registry or the IEEE MA-M registry)

HQ / country

1 N. LaSalle St., Chicago, IL 60602, US (IEEE registry address) [Confirmed] — the IEEE MA-L registry 0013CF

Company identity / substance

4Access Communications Co, founded 2001, ~10 employees, filed two SEC Form D offerings (March 2010, $1,000,000; August 2010, $100,000) at an address matching the IEEE registration [Confirmed] — https://www.formds.com/issuers/4access-communications-co

Company status

Active small private company per company-profile data; own website content unverifiable due to a TLS certificate error on fetch [Likely] — https://www.cbinsights.com/company/4access-communications, https://www.4access.com/

Device types

Point-of-transaction / payment terminal systems, per company self-description [Likely] — https://www.cbinsights.com/company/4access-communications

Notable products

Unknown — no specific product model or teardown corroboration found [Unknown]

Registration date

Unknown — IEEE's public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) publishes no assignment date; none is attributed here [Confirmed] — the IEEE MA-L registry

Security history

No CVE, advisory, or malware/threat-intel association found as of an August 2026 search [Likely] — general web search, no dedicated advisory database crawl performed

Related vendors

None identified

Analyst note

A single, small OUI holder — expect this prefix to appear rarely, if at all, on real-world traffic, and expect it on payment/point-of-sale hardware rather than general consumer devices when it does appear.