AS14938 BET-AS

Nine announcements forming two halving chains, one per range, with a netname that tells you which chain you are in.

What it's used for

• A competitive telephone carrier's network. 11,776 addresses across nine IPv4 prefixes, with two observed BGP neighbours and no IPv6 announced.

Notable

• Blocks in 207.148 carry the netname BET-1; blocks in 69.71 carry BET-2. Both are registered to Bullseye Telecom with a BullsEye Telecom NOC contact.
• The 207.148 announcements run /20, /21, /22, /23, /24, each half the size of the last. The 69.71 announcements run /21, /22, /23, /24, the same chain starting one step down.
• The lookup for 69.71.19.0/24 failed, so nothing is known about that record.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• A halving chain is what happens when a network announces every piece of an allocation separately rather than the whole thing at once. Two chains, one per range, means the same operator repeated the same habit years apart on unrelated space.
• The netname suffix maps exactly onto the range, so the label alone tells you which allocation a block came from. It is the smallest possible amount of information a netname can carry, and it is enough.
• The registrant's own capitalisation differs between the two fields on every record. Registry data is typed by people, and the people were not the same.
• Two neighbours and nothing answering a reverse lookup describe a carrier whose addresses serve business circuits rather than anything meant to be found from outside.