AS15248 — METASWITCH-AS1

AS15248 announces 3 IPv4 prefixes covering 1,024 addresses and 4 IPv6 prefixes.

About this network

Three companies in one registrant field, and the acquisition chain shows in the netnames.

What it's used for

• A communications software company's network. Three IPv4 prefixes and four IPv6 prefixes announced from the United States, with three observed BGP neighbours.

Notable

• One registrant field names an operations team belonging to the company's acquirer, followed by a third company entirely, joined by a semicolon.
• The other two blocks are registered to the company itself, under netnames that share a six-letter root, one bare and one with a type word appended.
• A third netname marks the protocol version in the label, on a block that carries no IPv6 at all.
• The four IPv6 announcements tile one allocation at two lengths, splitting a /46 into pieces.
• One of nine sampled addresses answered, with an opaque ten-character host label under the company's own domain.

Interesting

• A registrant field that names an acquirer's operations team rather than either company is a record updated by whoever now answers the phone. It is more useful operationally than the company name would be, and it makes the field useless for identifying who owns the space.
• Marking the protocol version in a netname is redundant, since the block's format already says which it is. It only makes sense as a way to distinguish a v4 record from a v6 record in a system that keeps both, and the record here does not.
• An opaque host label discloses less than the descriptive names elsewhere in this range, which for a vendor whose software runs carrier voice platforms is the right trade.

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

Announced prefixes

• 192.91.191.0/24
• 198.147.226.0/24
• 205.196.118.0/23
• 2620:104:4000::/46
• 2620:104:4008::/48
• 2620:104:400c::/48
• 2620:104:400e::/48

Upstream networks

• AS2856 British Telecommunications Limited
• AS12213 Centersquare
• AS132040 Vital Data Ltd

Adjacent networks

• AS2856 British Telecommunications Limited
• AS12213 Centersquare
• AS132040 Vital Data Ltd