asn.dev

Address space

AS10343 AS10343 - National Aeronautics and Space Administration

Unclassified ARIN

IPv4 prefixes 13 124K addresses
IPv6 prefixes 21
Most common size /17 IPv4
Flagged 21

Shape

IPv4 prefix sizes

All IPv4
/17
/17: 2
2
/18
/18: 2
2
/19
/19: 2
2
/20
/20: 1
1
/21
/21: 1
1
/22
/22: 2
2
/23
/23: 1
1
/24
/24: 2
2

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: 2
2
/50
/50: 2
2
/51
/51: 2
2
/52
/52: 2
2
/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 America34

Review

Flagged prefixes

21 of 34
PrefixFamilyAddressesCountryFlags
2001:4d0:6118::/51IPv6/51USToo specific
2001:4d0:6118:2000::/55IPv6/55USToo specific
2001:4d0:6118:2200::/58IPv6/58USToo specific
2001:4d0:6118:2240::/60IPv6/60USToo specific
2001:4d0:6118:2250::/63IPv6/63USToo specific
2001:4d0:6118:2252::/64IPv6/64USToo specific
2001:4d0:6118:2253::/64IPv6/64USToo specific
2001:4d0:6118:2254::/62IPv6/62USToo specific
2001:4d0:6118:2258::/61IPv6/61USToo specific
2001:4d0:6118:2260::/59IPv6/59USToo specific
2001:4d0:6118:2280::/57IPv6/57USToo specific
2001:4d0:6118:2300::/56IPv6/56USToo specific
2001:4d0:6118:2400::/54IPv6/54USToo specific
2001:4d0:6118:2800::/53IPv6/53USToo specific
2001:4d0:6118:3000::/52IPv6/52USToo specific
2001:4d0:6118:4000::/50IPv6/50USToo specific
2001:4d0:6118:8000::/49IPv6/49USToo specific
2001:4d0:6318::/49IPv6/49USToo specific
2001:4d0:6318:8000::/50IPv6/50USToo specific
2001:4d0:6318:c000::/51IPv6/51USToo specific
2001:4d0:6318:e000::/52IPv6/52USToo specific

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