Overture Networks, Inc. — 3 prefixes (MA-L)

A MAC address starting with 00:07:C1, 00:0A:C6, or 00:05:7A belongs to Overture Networks, Inc., a Carrier Ethernet equipment maker whose gear was deployed at the network edge by telecom service providers rather than sold to end users.

Overture Networks was founded in July 2000 by Jeff Reedy and Prayson Pate, headquartered in Morrisville / Research Triangle Park, NC, with additional offices in Westford, MA and Bangalore, India. The company designed demarcation and aggregation devices spanning optical Ethernet, Ethernet-over-bonded-copper, and Ethernet-over-TDM/SONET/SDH/PDH access at speeds from 1 Mbit/s to 10 Gbit/s.

Named products include the Overture 6500 — flagship of its "Open Service Delivery Family" — plus the Overture 6100 and Overture 4800. These were metro-edge platforms sold to carriers, not consumer or enterprise desktop devices, so this OUI is unlikely to appear on a home or office network.

Overture acquired Ceterus Networks in 2008 and merged with Hatteras Networks in 2011, before ADVA Optical Networking bought the combined company in January 2016 for $35 million plus up to $5 million in earn-outs. Overture Networks has not operated as an independent company since that acquisition.

No CVE is recorded in the NVD as of an August 2026 search for "Overture Networks" or its named products, and no malware or trojan association surfaced.

IEEE assignment

3 prefixes → Overture Networks, Inc. (name recorded with formatting variants "Overture Networks." and "Overture Networks" across the three rows), registered Morrisville, NC, US [Confirmed] — the IEEE MA-L registry 0007C1, the IEEE MA-L registry 000AC6, the IEEE MA-L registry 00057A

Registry / block size

MA-L (24-bit OUI); 3 IEEE prefixes; no MA-M or MA-S sub-allocations found [Confirmed] — the IEEE MA-L registry; the IEEE MA-M registry; the IEEE MA-S registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

637 Davis Drive, Morrisville, NC 27560, US (registry address) [Confirmed] — the IEEE MA-L registry 0007C1

Company status

defunct as an independent company — acquired by ADVA Optical Networking, January 2016, for $35M plus up to $5M earn-out [Likely: the acquisition itself is Confirmed, but no source states explicitly whether the "Overture" brand was retired or fully absorbed] — https://en.wikipedia.org/wiki/Overture_Networks, https://www.lightreading.com/telecoms-software/adva-adds-nfv-smarts-with-35m-overture-acquisition

Device types

Carrier Ethernet demarcation and aggregation equipment for the telecom metro edge [Confirmed] — https://en.wikipedia.org/wiki/Overture_Networks

Notable products

Overture 6500, Overture 6100, Overture 4800 [Confirmed] — https://en.wikipedia.org/wiki/Overture_Networks

Verified sample prefixes (all MA-L, Overture Networks)

00:07:C1, 00:0A:C6, 00:05:7A [Confirmed] — the IEEE MA-L registry 0007C1, the IEEE MA-L registry 000AC6, the IEEE MA-L registry 00057A

Corporate history

founded July 2000 by Jeff Reedy and Prayson Pate; acquired Ceterus Networks (2008); merged with Hatteras Networks (2011); acquired by ADVA Optical Networking (January 2016) [Confirmed] — https://en.wikipedia.org/wiki/Overture_Networks, https://www.lightreading.com/telecoms-software/adva-adds-nfv-smarts-with-35m-overture-acquisition, https://www.lightwaveonline.com/business/mergers-acquisitions/article/16654260/adva-strengthens-carrier-ethernet-nfv-hand-with-overture-networks-acquisition

Registration date

Unknown — IEEE's the IEEE MA-L registry has no date column, so no IEEE assignment date exists for 0007C1, 000AC6, or 00057A. maclookup.app shows "Initial registration: 24 October 2001" for 0007C1; this is a third-party database artifact, not an IEEE fact, and is not attributed to IEEE here

[Confirmed] — https://maclookup.app/macaddress/0007C1

Security note

no CVE recorded in the NVD as of an August 2026 search for "Overture Networks" or its named products; no malware or trojan association found [Confirmed]

Related vendors

Ceterus Networks (acquired 2008), Hatteras Networks (merged 2011), ADVA Optical Networking (acquiring parent since 2016; ADVA's own OUI assignments, if any, are separate registrations and are not represented by these three prefixes) [Confirmed] — https://en.wikipedia.org/wiki/Overture_Networks

Analyst note

these three OUIs identify Overture-manufactured Carrier Ethernet edge equipment historically deployed by telecom service providers, not consumer devices; since Overture has not operated independently since the 2016 ADVA acquisition, absence of this OUI on current-generation ADVA hardware is expected and does not indicate a lookup failure.