AS15133

AS15133 is an ARIN-registered autonomous system long associated with the EdgeCast content delivery network. Its corporate lineage is unusually tangled: EdgeCast Networks launched the ASN, Verizon acquired the company in 2013 and rebranded it Verizon Digital Media Services, ownership passed through Oath/Verizon Media and Apollo Global Management/Yahoo, and in 2022 the CDN business merged into Limelight Networks to form Edgio. After Edgio filed for bankruptcy and wound down its CDN around January 2025, the EdgeCast technology assets were acquired by Parler Cloud Technologies (with some assets going to Encore Technologies). The ARIN registry still carries the org as "Edgecast Inc." (handle EDGEC-25, Los Angeles, CA), and the operational contacts now point at uplynk.com, the EdgeCast OTT/streaming subsidiary. The critical triage point for AS15133 is that it is no longer routing: every routing source consulted (bgp.he.net, RIPEstat, bgp.tools) agrees the ASN has not appeared in the global table since 2026-05-06, announcing zero IPv4 and zero IPv6 prefixes, consistent with the post-bankruptcy decommissioning. CAIDA ranks it near the bottom (AS rank ~20,435) with a singleton-class customer cone, and no RPKI ROAs cover its formerly originated prefixes. No notable public abuse signal attributes large-scale malicious operations to AS15133 itself — only incidental IP-level spam tracking and a single off-network domain-spoofing report — as expected for a large legitimate CDN that is now historical.

Operator

Edgecast Inc. (current ARIN registrant; formerly EdgeCast Networks → Verizon Digital Media Services → Edgio; EdgeCast assets acquired by Parler Cloud Technologies, Feb 2025) [Confirmed] — ARIN RDAP autnum/15133, en.wikipedia.org/wiki/Edgecast

Country / RIR

US, ARIN (American Registry for Internet Numbers) [Confirmed] — ARIN RDAP autnum/15133

Allocated

2007-03-19 (ARIN RDAP autnum TOP-LEVEL registration event; a RIR registry date, NOT an IEEE date); last changed 2022-05-27 [Confirmed] — ARIN RDAP autnum/15133 (corroborated by A2 + A3)

Org status

ARIN org handle EDGEC-25, "Edgecast Inc.", 13031 W Jefferson Blvd, Building 900, Los Angeles, CA 90094; lineage EdgeCast → Verizon (2013) → Oath/Verizon Media → Apollo/Yahoo (2021) → Limelight/Edgio (2022) → Edgio bankruptcy (2024) → Parler Cloud Technologies (Feb 2025); registry record active but routing withdrawn

[Confirmed] — ARIN RDAP autnum/15133, en.wikipedia.org/wiki/Edgecast

Contacts

abuse@uplynk.com; NOC support@uplynk.com / +1-310-479-3200; the admin POC's individual mailbox (uplynk.com) is in the ARIN RDAP record [Confirmed] — ARIN RDAP autnum/15133

Security/abuse context (NEUTRAL, DATED)

no notable public abuse attributing large-scale malicious operations to AS15133 as of 2026-06-25 — not on Spamhaus DROP/ASN-DROP, not in LOTS Project; only incidental IP-level spam tracking (CleanTalk) and one June-2024 edgecastcdn.net domain-spoofing report originating off-network; a bgp.he.net bogon-announcement flag is undated and likely a wind-down artifact

Network & routing

Network type

Content Delivery Network (CDN) — classified "Content" in PeeringDB; global CDN, DDoS protection, and OTT/streaming video delivery (Uplynk) [Confirmed] — peeringdb.com/net/1319, edgecast.io

Size

dormant — 0 IPv4 prefixes and 0 IPv6 prefixes currently propagated (not visible since 2026-05-06); CAIDA customer cone = 1 ASN, ~20 prefixes, ~5,120 addresses (historical) [Confirmed for current 0; Likely for historical cone] — bgp.he.net/AS15133, RIPEstat routing-status, CAIDA AS Rank

Routing/peering

NOT announced today — RIPEstat shows 0 prefixes and 0 RIS peers as of 2026-06-25; historical peers include AS174 (Cogent). PeeringDB policy: Selective, no ratio/contract, health checks required, IRR AS-SET AS-EDGECAST, peering@edgecast.io [Confirmed for current 0; Confirmed for PeeringDB policy] — bgp.he.net/AS15133, peeringdb.com/net/1319, RIPEstat

RPKI

no valid ROAs — bgp.he.net reports RPKI Originated Valid = 0 for both IPv4 and IPv6 (no ROA coverage on formerly originated prefixes) [Confirmed] — bgp.he.net/AS15133

Notable usage

major CDN serving large-scale media/entertainment/enterprise customers under the Verizon Digital Media Services brand; Uplynk subsidiary provides OTT/streaming. At peak ~19 IXP presences across North America, Europe, Asia-Pacific, and South America; withdrawn from global routing since 2026-05-06

[Confirmed] — bgp.he.net/AS15133, en.wikipedia.org/wiki/Edgecast

Analyst note

Encountered as a recently dormant CDN ASN with a deep Verizon/Yahoo/Edgio lineage; WHOIS resolves to Edgecast Inc. with Uplynk contacts, but live routing ceased 2026-05-06 following the Edgio CDN shutdown and EdgeCast asset sale. Clean, historical ASN.