AS8757 — NSFOC

AS8757 announces 8 IPv4 prefixes covering 3,328 addresses and 5 IPv6 prefixes.

About this network

NSFOCUS, Inc. (NSFOCUS) — the international arm of the security vendor NSFOCUS, registered in Santa Clara, California. This AS is its anti-DDoS scrubbing cloud, not a conventional hosting or access network.

What it's used for

• Fronting customer web properties for DDoS mitigation and WAF. Traffic destined for a protected site is redirected into these prefixes, cleaned in a scrubbing centre, and forwarded to the real origin.
• rDNS across the space is uniformly IP-ADDR.reverse.ip.nsfocus.cloud, which is the honest witness here: every address belongs to the platform itself, not to the customers behind it.

Notable

• The shape gives it away. Roughly 3,000 IPv4 addresses but around 157 observed BGP neighbours — a ratio no ordinary network produces. That is an anycast footprint: the same small blocks announced from many scrubbing PoPs worldwide, so the closest one absorbs an attack.
• Because of that, these addresses should not be geolocated to a single country. The RIPE objects carry a mix of US and GB registration details and the prefixes appear wherever a scrubbing centre does.
• An address here is a proxy in front of someone else's site. Whatever it serves, the content owner is not NSFOCUS.

Interesting

• Mitigation networks are structurally the inverse of eyeball networks: tiny address inventory, enormous peering surface. Peering breadth, not address count, is the thing being sold.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 185.144.84.0/24
• 185.144.86.0/23
• 185.146.127.0/24
• 212.58.128.0/22
• 212.58.132.0/24
• 212.58.134.0/23
• 212.58.149.0/24
• 212.58.151.0/24
• 2a07:7b80:101::/48
• 2a07:7b80:102::/47
• 2a07:7b80:104::/47
• 2a07:7b80:107::/48
• 2a07:7b80:108::/48

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS24482 SG.GS
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS33891 Core-Backbone GmbH
• AS34019 Hivane Association
• AS9002 RETN Limited
• AS212024 Marc Schmitt
• AS12552 GlobalConnect AB
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS37721 Virtual Technologies & Solutions
• AS12859 BIT BV
• AS12779 IT.Gate S.p.A.
• AS29632 Netassist International EOOD
• AS56662 Marcin Gondek
• AS48185 team.blue NV
• AS17639 Converge ICT Solutions Inc.
• AS50300 CustodianDC Limited
• AS213241 TECHIT.BE SRL

Downstream networks

• AS23074 PETROLEO BRASILEIRO S.A. - PETROBRAS
• AS18206 TM TECHNOLOGY SERVICES SDN. BHD.
• AS136907 HUAWEI CLOUDS
• AS47581 NSFOCUS Technologies UK Limited

Adjacent networks

• AS1299 Arelion Sweden AB
• AS267056 EVEREST RIDGE DO BRASIL LTDA
• AS23074 PETROLEO BRASILEIRO S.A. - PETROBRAS
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS18206 TM TECHNOLOGY SERVICES SDN. BHD.
• AS34549 meerfarbig GmbH & Co. KG
• AS136907 HUAWEI CLOUDS
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS47581 NSFOCUS Technologies UK Limited
• AS24482 SG.GS
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS34019 Hivane Association
• AS33891 Core-Backbone GmbH
• AS212024 Marc Schmitt
• AS12552 GlobalConnect AB
• AS37721 Virtual Technologies & Solutions
• AS57463 NetIX Communications JSC
• AS37100 SEACOM Limited
• AS12859 BIT BV
• AS12779 IT.Gate S.p.A.
• AS20485 Joint Stock Company TransTeleCom
• AS17639 Converge ICT Solutions Inc.
• AS9002 RETN Limited

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• Megaport Frankfurt IX — Frankfurt, Germany
• Megaport IX Ashburn — Ashburn, United States
• MegaPort IX Singapore — Singapore, Singapore