AS816

AS816 is a legacy Verizon Business (formerly MCI Communications Services, Inc.) autonomous system registered with ARIN under the name MOONV6, and it currently announces zero IPv4 and zero IPv6 prefixes. RIPEstat, CAIDA AS Rank, bgp.he.net, and bgp.tools all agree it is absent from the global routing table as of 2026-08-01, with zero visible BGP peers and a customer cone limited to itself.

The ASN was registered on 2002-05-21 (ARIN autnum top-level registration event) and last changed 2022-05-31, per ARIN RDAP; bgp.tools independently corroborates the same allocation date. The registrant address on file is 22001 Loudoun County Parkway, Ashburn, VA — a Verizon Business operations hub. RIS records show AS816 did historically originate prefixes, first seen 205.150.57.0/24 on 2000-08-18 and last seen 198.89.131.0/24 on 2004-05-18, but nothing since.

The MOONV6 name references the Moonv6 project, a North American IPv6 Task Force interoperability testbed (UNH-IOL-based, initialized around 2003) involving industry, universities, and government agencies including DoD. Per secondary, non-authoritative snippets, MCI/Verizon reportedly gave the testbed native, non-tunneled connectivity via MAE exchange points around January 2005; the original operator press release is now a dead link, so that specific detail could not be live-verified and is tagged Unknown.

Separately, AS816 was historically known as UUNET-AS4 before MCI's 1998 acquisition of UUNET Technologies, per NANOG archive references — consistent with a long-lived, now-dormant legacy ASN inside the Verizon/MCI/UUNET lineage.

Verizon Business's active commercial transit backbones run under AS701 (US), AS702 (Europe), and AS703 (ASPAC) — the only three ASNs named in its published peering policy. AS816 has no PeeringDB entry and no active peering relationships of its own. CAIDA ranks it 79,459, near the bottom of the global table, reflecting complete routing inactivity. RPKI posture is not assessable: with zero announced prefixes there are no ROAs to validate, and bgp.he.net shows 0 RPKI-valid and 0 RPKI-invalid origins.

Operator

Verizon Business (MCI Communications Services, Inc., an indirect wholly-owned subsidiary of Verizon Communications Inc.); ARIN RDAP ASN name "MOONV6" [Confirmed] — ARIN RDAP autnum 816, SEC 10-K Exhibit 21

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP

Allocated

2002-05-21 (ARIN autnum top-level registration event); last changed 2022-05-31 [Confirmed] — ARIN RDAP; independently corroborated by bgp.tools ("allocated under ARIN on May 21, 2002")

Org status

Active [Confirmed] — ARIN RDAP; Verizon Business is an indirect wholly-owned subsidiary of Verizon Communications Inc. — SEC 10-K Exhibit 21

Contacts

abuse-mail@verizonbusiness.com, abuse@verizon.com (authoritative RIR: ARIN); registrant address 22001 Loudoun County Parkway, Ashburn, VA 20147 [Confirmed] — RIPEstat abuse-contact-finder, ARIN RDAP

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-01 — not on the live Spamhaus ASN-DROP feed; no NANOG-archive abuse threads or dedicated threat-intel writeups found naming AS816 specifically

Network & routing

Network type

IPv6 research/interoperability testbed ASN ("Moonv6"); historically originated as UUNET-AS4 before MCI's 1998 acquisition of UUNET Technologies; distinct from Verizon Business's active commercial transit backbones AS701/AS702/AS703

[Likely] — ARIN RDAP, seclists.org/nanog/1997/Dec/125, Wikipedia (UUNET)

Size

dormant/unrouted — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status/announced-prefixes, CAIDA AS Rank, bgp.he.net, bgp.tools (2026-08-01)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/328 v4, 0/322 v6); CAIDA asnDegree total 0 (customer 0, peer 0, provider 0); no PeeringDB entry. Historically originated prefixes in RIS between 2000-08-18 and 2004-05-18, none since. Verizon Business's published peering policy names only AS701/AS702/AS703 — AS816 is not mentioned [Confirmed]

RPKI

not assessable — AS816 announces no prefixes, so there are no ROAs to validate; bgp.he.net shows 0 RPKI-valid and 0 RPKI-invalid origins [Confirmed]

Notable usage

name references the Moonv6 project (North American IPv6 Task Force, UNH-IOL-based testbed initialized ~2003, involving industry/university/DoD/government participants) [Likely] — iol.unh.edu Moonv6 whitepapers. Per unverifiable secondary snippets, MCI/Verizon reportedly gave the testbed native, non-tunneled connectivity via MAE exchange points around Jan 2005 — original operator press release is a dead link [Unknown]

Related ASNs

AS701, AS702, AS703 (Verizon Business's active commercial transit backbones, the only ASNs named in its peering policy) [Confirmed]; other Verizon-family ASNs include AS1, AS6167, AS1321 [Likely]

Analyst note

legacy MOONV6-named ASN under Verizon Business/MCI, formerly UUNET-AS4; currently unrouted (dormant) with a clean abuse record and no PeeringDB presence.