asn.dev

Address space

AS400773 BOSTON-FIBER - Boston Fiber LLC

Unclassified ARIN

IPv4 prefixes 2 768 addresses
IPv6 prefixes 17
Most common size /23 IPv4
Flagged 17

Shape

IPv4 prefix sizes

All IPv4
/23
/23: 1
1
/24
/24: 1
1

A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.

Shape

IPv6 prefix sizes

All IPv6
/49
/49: 1
1
/50
/50: 1
1
/51
/51: 1
1
/52
/52: 1
1
/53
/53: 1
1
/54
/54: 1
1
/55
/55: 1
1
/56
/56: 1
1
/57
/57: 1
1
/58
/58: 1
1
/59
/59: 1
1
/60
/60: 1
1
/61
/61: 1
1
/62
/62: 1
1
/63
/63: 1
1
/64
/64: 2
2

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America19

Review

Flagged prefixes

17 of 19
PrefixFamilyAddressesCountryFlags
2602:ff65:e27::/60IPv6/60USToo specific
2602:ff65:e27:10::/64IPv6/64USToo specific
2602:ff65:e27:11::/64IPv6/64USToo specific
2602:ff65:e27:12::/63IPv6/63USToo specific
2602:ff65:e27:14::/62IPv6/62USToo specific
2602:ff65:e27:18::/61IPv6/61USToo specific
2602:ff65:e27:20::/59IPv6/59USToo specific
2602:ff65:e27:40::/58IPv6/58USToo specific
2602:ff65:e27:80::/57IPv6/57USToo specific
2602:ff65:e27:100::/56IPv6/56USToo specific
2602:ff65:e27:200::/55IPv6/55USToo specific
2602:ff65:e27:400::/54IPv6/54USToo specific
2602:ff65:e27:800::/53IPv6/53USToo specific
2602:ff65:e27:1000::/52IPv6/52USToo specific
2602:ff65:e27:2000::/51IPv6/51USToo specific
2602:ff65:e27:4000::/50IPv6/50USToo specific
2602:ff65:e27:8000::/49IPv6/49USToo specific

A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.