AS267

AS267 is a low-numbered legacy autonomous system registered under ARIN whose top-level autnum carries a registration date of 2000-05-17 and a last-changed date of 2012-03-02. Despite its early number, AS267 is not a dormant relic: it is the active routing identity of Nether.Net, the network run by veteran operator Jared Mauch and now operated under the legal entity Washtenaw Fiber Properties LLC (trading as WashFTTH.com), a small fiber-to-the-home (FTTH) ISP serving Manchester and the wider Washtenaw County, Michigan area. RIPEstat shows the ASN announcing five IPv4 prefixes (roughly 2,304 addresses) plus one IPv6 prefix (2602:fe55::/36), with full visibility across all RIS collector peers and four observed BGP neighbours. PeeringDB classifies it as a Cable/DSL/ISP eyeball network in the 1–5 Gbps traffic band with an Open peering policy, one IX presence at DET-iX (Detroit Internet Exchange, 10G), the IRR AS-SET AS-NETHER, and a 123.NET DC1 (Southfield, MI) facility. Routing-security posture is strong: all originated prefixes carry valid RPKI ROAs and IRR entries. The bgp.he.net "announces bogons" flag against 204.42.252.0/22 appears to be a stale data-classification artifact rather than an active hijack, since that prefix passes both ROA and IRR checks. No notable public abuse signal was found as of 2026-06-21 — no Spamhaus listing, no botnet/C2 association, and no NANOG de-peering complaints — consistent with a clean network run by a respected, long-standing operator.

Operator

Washtenaw Fiber Properties LLC (trading as Nether.Net / WashFTTH.com); ARIN org handle NETHER-2 [Confirmed] — ARIN RDAP autnum/267, peeringdb.com/net/20268, bgp.he.net/AS267

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP autnum/267 (block 1-1876, "Assigned by ARIN")

Allocated

2000-05-17 (ARIN registry date, NOT an IEEE date — IEEE publishes no ASN registration dates); last changed 2012-03-02 [Confirmed] — ARIN RDAP autnum top-level events

Org status

commercial for-profit LLC (Washtenaw Fiber Properties LLC); RIR status "ok", last confirmed 2024-06-26 per PeeringDB [Confirmed] — peeringdb.com/net/20268, ARIN RDAP autnum/267

Contacts

technical/administrative/abuse role is held by an individual, Jared Mauch (ARIN handle JM568-ARIN); the registrant address on file is in Ann Arbor, MI, US, and the contact is reachable through the ARIN RDAP record (personal contact details omitted here) [Confirmed] — ARIN RDAP autnum/267

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-21 — no Spamhaus ASN-DROP/SBL listing, no botnet/C2 association, no NANOG de-peering complaints; bgp.he.net "announces bogons" flag on 204.42.252.0/22 is a stale classification artifact (prefix passes ROA + IRR); IPinfo "bittorrent"/"vpn" tags are routine for a residential FTTH ISP

Network & routing

Network type

Cable/DSL/ISP — residential and business FTTH broadband in Washtenaw County, Michigan (primary service area Manchester, MI) [Confirmed] — peeringdb.com/net/20268, washftth.com

Size

5 announced IPv4 prefixes (~2,304 addresses) + 1 IPv6 prefix (2602:fe55::/36, 4,096 /48s); 4 observed neighbours [Confirmed] — RIPEstat routing-status / announced-prefixes (2026-06)

Routing/peering

full RIS visibility (327/327 v4 peers, 322/322 v6 peers); Open peering policy, no ratio/contract requirement, no route servers, IPv4+IPv6 unicast; IRR AS-SET AS-NETHER; one IX (DET-iX, 10G); facility 123.NET DC1, Southfield, MI [Confirmed] — RIPEstat routing-status, peeringdb.com/net/20268

RPKI

strong — all 6 originated prefixes (5 IPv4, 1 IPv6) carry valid ROAs and valid IRR entries; zero RPKI-invalid origins [Likely] — bgp.tools/as/267, bgp.he.net/AS267

Notable usage

regional FTTH ISP serving ~2,015 residents in Manchester/Washtenaw County; symmetrical fiber tiers (100/250/500/1000 Mbps, ~$65–$139/mo), no data caps, no contracts; originated prefixes 23.138.112.0/22, 23.138.113.0/24, 23.138.114.0/23, 204.42.252.0/22, 192.131.22.0/24 and 2602:fe55::/36; observed upstreams include AS12129 (123.Net), AS14103 (ACD.net), AS6939 (Hurricane Electric) [Confirmed for services/prefixes; Likely for upstream list] — washftth.com, bgp.he.net/AS267, broadbandnow.com/washtenaw-fiber-properties

Analyst note

Early-numbered but actively routed ASN; the registrant org is now Washtenaw Fiber Properties LLC, while the network retains the Nether.Net name and Jared Mauch as the operating contact. Entity-level contact dates (JM568-ARIN registered 1995-01-23) are decoys and were NOT used for allocated_date — the autnum top-level registration (2000-05-17) is authoritative. Clean, active ASN.