AS16477 — NCL-203-16477

AS16477 announces 17 IPv4 prefixes covering 8,448 addresses and 0 IPv6 prefixes.

About this network

Seventeen prefixes out of one parent range, every one of them carrying the same netname.

What it's used for

• A consumer research company's network. Seventeen IPv4 prefixes announced from the United States, no IPv6, eight thousand four hundred and forty-eight addresses, through sixteen observed BGP neighbours.

Notable

• Every announced block comes from the same parent range, and every one is registered under an identical netname: three initials and a three-digit numeral.
• The AS handle takes that netname and appends this network's own number, so the handle is the netname plus a fact the record already states.
• The blocks are scattered through the parent range at four different sizes, from the largest here down to the smallest routable one. They are not contiguous, so none of them can be merged.
• Sixteen observed neighbours for eight thousand addresses is an unusually wide spread of upstreams for a holding this small.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• One netname across seventeen registrations means the field was filled in once and copied. It identifies the company and nothing else, so the registry can say who holds a block but never which one.
• Many upstreams and few addresses is the shape of a network that needs to reach a lot of places rather than serve a lot of traffic. Connections are the product; capacity is not.
• Seventeen fragments of one range is a routing table entry per decision, and none of the decisions are visible from outside. Only the fragments are.

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

Announced prefixes

• 138.108.3.0/24
• 138.108.32.0/24
• 138.108.36.0/24
• 138.108.80.0/23
• 138.108.82.0/24
• 138.108.96.0/21
• 138.108.104.0/22
• 138.108.115.0/24
• 138.108.136.0/23
• 138.108.138.0/24
• 138.108.140.0/22
• 138.108.144.0/24
• 138.108.150.0/24
• 138.108.152.0/24
• 138.108.154.0/23
• 138.108.157.0/24
• 138.108.162.0/24

Upstream networks

• AS8220 COLT Technology Services Group Limited
• AS3356 Level 3 Parent, LLC
• AS4755 TATA Communications formerly VSNL is Leading ISP
• AS6660 Vodafone Enterprise Equipment Limited
• AS9930 TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia
• AS55836 Reliance Jio Infocomm Limited
• AS7018 AT&T Enterprises, LLC
• AS9924 Taiwan Fixed Network, Telco and Network Service Provider.
• AS9457 DREAMLINE CO.
• AS139883 SPTEL PTE. LTD.
• AS2856 British Telecommunications Limited
• AS4788 TM TECHNOLOGY SERVICES SDN. BHD.
• AS46887 Crown Castle Fiber LLC
• AS9304 HGC Global Communications Limited
• AS9255 Singapore Telecom
• AS14178 Megacable Comunicaciones de Mexico, S.A. de C.V.

Adjacent networks

• AS8220 COLT Technology Services Group Limited
• AS3356 Level 3 Parent, LLC
• AS4755 TATA Communications formerly VSNL is Leading ISP
• AS6660 Vodafone Enterprise Equipment Limited
• AS9930 TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia
• AS55836 Reliance Jio Infocomm Limited
• AS7018 AT&T Enterprises, LLC
• AS9924 Taiwan Fixed Network, Telco and Network Service Provider.
• AS9457 DREAMLINE CO.
• AS139883 SPTEL PTE. LTD.
• AS2856 British Telecommunications Limited
• AS4788 TM TECHNOLOGY SERVICES SDN. BHD.
• AS46887 Crown Castle Fiber LLC
• AS9304 HGC Global Communications Limited
• AS9255 Singapore Telecom
• AS14178 Megacable Comunicaciones de Mexico, S.A. de C.V.