AS16050 — REFINITIV-SLOUGH-LO5-RES-AS Refinitiv Slough-LO5 resiliancy

AS16050 announces 19 IPv4 prefixes covering 10,752 addresses and 0 IPv6 prefixes.

About this network

The handle names a town, a site code, and a purpose, with the word for resilience misspelled.

What it's used for

• A market data company's site network. Nineteen IPv4 prefixes announced from the United Kingdom, no IPv6, ten thousand seven hundred and fifty-two addresses, across four observed BGP neighbours.

Notable

• The handle is the brand, a town, a three-character site code, a contraction for resilience, and three letters for an autonomous system. The word for resilience is spelled with an extra letter.
• Netnames use four conventions at once: the brand's initials with a base address and a sequence digit, the brand's initials with the site code, three initials with a number, and the full brand with a base address and prefix length written out.
• Most blocks are registered to the group's company in another country entirely, despite being announced from this one. One is registered to a third national arm.
• One block belongs to the parent exchange group's handle, built from initials, a town contraction and a country code. Another's abuse contact is a numbered role with a four-digit number.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Naming an autonomous system after one building's backup path is unusual and precise. It says this number exists to keep a specific site reachable when its primary path fails, not to serve a business.
• A typo in the handle has been carried in every routing lookup of this network for years, because the field is a label and nothing validates the spelling of a label.

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

Announced prefixes

• 146.242.21.0/24
• 146.242.52.0/24
• 155.46.20.0/23
• 155.46.24.0/22
• 155.46.36.0/24
• 155.46.38.0/24
• 159.104.6.0/24
• 159.220.0.0/22
• 159.220.8.0/21
• 159.220.24.0/22
• 159.220.38.0/23
• 159.220.44.0/24
• 159.220.56.0/23
• 159.220.63.0/24
• 159.220.74.0/23
• 159.220.97.0/24
• 159.220.148.0/24
• 192.165.211.0/24
• 192.165.220.0/22

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS8220 COLT Technology Services Group Limited
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS13335 Cloudflare, Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS8220 COLT Technology Services Group Limited
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS13335 Cloudflare, Inc.

Routing security

• RPKI: 0 valid, 0 invalid and 26 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 69 route objects.
• Listed in as-sets: AS-CWCUSTEU, AS-EQUANT-SOUTHEUR, AS-OBS-SOUTHEUR, AS-REFINITIV-AS-SET, AS-TELSTRA-INTL-CUSTOMERS, AS-THOMSON-REUTERS, AS-UDOS, AS13335:AS-CUSTOMERS, AS6421:AS-ALL, AS8220:AS-COLTUK.