asn.dev

Address space

AS7377 UCSD

IPv4 prefixes 772 12.08M addresses
IPv6 prefixes 34
Most common size /24 IPv4
Flagged 20

Shape

Prefix sizes

IPv4
/12
/12: 1
1
/13
/13: 4
4
/14
/14: 2
2
/15
/15: 17
17
/16
/16: 43
43
/17
/17: 42
42
/18
/18: 55
55
/19
/19: 53
53
/20
/20: 70
70
/21
/21: 75
75
/22
/22: 96
96
/23
/23: 115
115
/24
/24: 196
196
/30
/30: 2
2
/31
/31: 1
1

How this network carves its IPv4 space. 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

Prefix sizes

IPv6
/33
/33: 1
1
/34
/34: 2
2
/35
/35: 1
1
/36
/36: 1
1
/37
/37: 1
1
/38
/38: 1
1
/39
/39: 1
1
/40
/40: 1
1
/41
/41: 1
1
/42
/42: 1
1
/43
/43: 1
1
/44
/44: 1
1
/45
/45: 1
1
/46
/46: 1
1
/47
/47: 1
1
/48
/48: 1
1
/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: 1
1
/122
/122: 1
1

Geography

Where the space lands

CountryNamePrefixes
USUnited States of America806

Review

Flagged prefixes

20 of 806
PrefixFamilyAddressesCountryFlags
137.164.23.52/30IPv44USToo specific
137.164.23.56/30IPv44USToo specific
137.164.23.176/31IPv42USToo specific
2607:f380:1::118:9a41:7380/122IPv6—USToo specific
2607:f720:1700::/52IPv6—USToo specific
2607:f720:1700:1000::/53IPv6—USToo specific
2607:f720:1700:1800::/55IPv6—USToo specific
2607:f720:1700:1a00::/56IPv6—USToo specific
2607:f720:1700:1b00::/59IPv6—USToo specific
2607:f720:1700:1b20::/60IPv6—USToo specific
2607:f720:1700:1b31::/64IPv6—USToo specific
2607:f720:1700:1b32::/63IPv6—USToo specific
2607:f720:1700:1b34::/62IPv6—USToo specific
2607:f720:1700:1b38::/61IPv6—USToo specific
2607:f720:1700:1b40::/58IPv6—USToo specific
2607:f720:1700:1b80::/57IPv6—USToo specific
2607:f720:1700:1c00::/54IPv6—USToo specific
2607:f720:1700:2000::/51IPv6—USToo specific
2607:f720:1700:4000::/50IPv6—USToo specific
2607:f720:1700:8000::/49IPv6—USToo specific

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

Inventory

All prefixes

showing 400 of 806
PrefixFamilyAddressesCountryFlags
44.0.0.0/16IPv465,536US
44.1.0.0/24IPv4256US
44.1.4.0/22IPv41,024US
44.1.9.0/24IPv4256US
44.1.11.0/24IPv4256US
44.1.12.0/22IPv41,024US
44.1.16.0/20IPv44,096US
44.1.32.0/19IPv48,192US
44.1.64.0/18IPv416,384US
44.1.128.0/17IPv432,768US
44.2.0.0/20IPv44,096US
44.2.16.0/23IPv4512US
44.2.19.0/24IPv4256US
44.2.20.0/22IPv41,024US
44.2.24.0/21IPv42,048US
44.2.32.0/20IPv44,096US
44.2.48.0/22IPv41,024US
44.2.54.0/23IPv4512US
44.2.56.0/21IPv42,048US
44.2.64.0/18IPv416,384US
44.2.128.0/17IPv432,768US
44.3.128.0/17IPv432,768US
44.4.0.0/20IPv44,096US
44.4.16.0/24IPv4256US
44.4.18.0/23IPv4512US
44.4.20.0/22IPv41,024US
44.4.24.0/21IPv42,048US
44.4.32.0/21IPv42,048US
44.4.40.0/24IPv4256US
44.4.42.0/23IPv4512US
44.4.46.0/23IPv4512US
44.4.48.0/23IPv4512US
44.4.50.0/24IPv4256US
44.4.52.0/24IPv4256US
44.4.54.0/23IPv4512US
44.4.56.0/24IPv4256US
44.4.60.0/22IPv41,024US
44.4.68.0/22IPv41,024US
44.4.72.0/21IPv42,048US
44.4.80.0/20IPv44,096US
44.4.96.0/19IPv48,192US
44.4.132.0/22IPv41,024US
44.4.136.0/21IPv42,048US
44.4.144.0/20IPv44,096US
44.4.160.0/19IPv48,192US
44.4.192.0/18IPv416,384US
44.6.0.0/17IPv432,768US
44.6.129.0/24IPv4256US
44.6.130.0/23IPv4512US
44.6.132.0/22IPv41,024US
44.6.136.0/21IPv42,048US
44.6.144.0/20IPv44,096US
44.6.160.0/19IPv48,192US
44.6.192.0/18IPv416,384US
44.7.16.0/20IPv44,096US
44.7.32.0/19IPv48,192US
44.7.64.0/18IPv416,384US
44.7.128.0/17IPv432,768US
44.8.0.0/22IPv41,024US
44.8.4.0/24IPv4256US
44.8.6.0/23IPv4512US
44.8.8.0/21IPv42,048US
44.8.16.0/20IPv44,096US
44.8.32.0/19IPv48,192US
44.8.64.0/18IPv416,384US
44.8.128.0/17IPv432,768US
44.9.24.0/21IPv42,048US
44.9.32.0/19IPv48,192US
44.9.64.0/18IPv416,384US
44.9.128.0/17IPv432,768US
44.10.0.0/22IPv41,024US
44.10.5.0/24IPv4256US
44.10.6.0/23IPv4512US
44.10.8.0/23IPv4512US
44.10.11.0/24IPv4256US
44.10.12.0/22IPv41,024US
44.10.16.0/20IPv44,096US
44.10.32.0/19IPv48,192US
44.10.64.0/18IPv416,384US
44.10.128.0/17IPv432,768US
44.12.0.0/22IPv41,024US
44.12.4.0/23IPv4512US
44.12.8.0/24IPv4256US
44.12.10.0/23IPv4512US
44.12.12.0/23IPv4512US
44.12.15.0/24IPv4256US
44.12.16.0/20IPv44,096US
44.12.32.0/20IPv44,096US
44.12.49.0/24IPv4256US
44.12.50.0/23IPv4512US
44.12.52.0/22IPv41,024US
44.12.56.0/21IPv42,048US
44.12.64.0/19IPv48,192US
44.12.100.0/22IPv41,024US
44.12.104.0/21IPv42,048US
44.12.112.0/20IPv44,096US
44.12.128.0/17IPv432,768US
44.13.0.0/16IPv465,536US
44.14.0.0/16IPv465,536US
44.15.128.0/18IPv416,384US
44.15.192.0/19IPv48,192US
44.15.224.0/20IPv44,096US
44.16.0.0/21IPv42,048US
44.16.8.0/23IPv4512US
44.16.11.0/24IPv4256US
44.16.12.0/23IPv4512US
44.16.14.0/24IPv4256US
44.16.16.0/20IPv44,096US
44.16.32.0/20IPv44,096US
44.16.48.0/23IPv4512US
44.16.52.0/22IPv41,024US
44.16.56.0/21IPv42,048US
44.16.64.0/18IPv416,384US
44.16.128.0/17IPv432,768US
44.17.0.0/16IPv465,536US
44.18.0.0/20IPv44,096US
44.18.16.0/21IPv42,048US
44.18.24.0/22IPv41,024US
44.18.32.0/20IPv44,096US
44.18.48.0/23IPv4512US
44.18.50.0/24IPv4256US
44.18.52.0/22IPv41,024US
44.18.56.0/22IPv41,024US
44.18.61.0/24IPv4256US
44.18.62.0/23IPv4512US
44.18.64.0/18IPv416,384US
44.18.128.0/17IPv432,768US
44.19.0.0/16IPv465,536US
44.20.0.0/22IPv41,024US
44.20.5.0/24IPv4256US
44.20.6.0/23IPv4512US
44.20.8.0/21IPv42,048US
44.20.16.0/21IPv42,048US
44.20.24.0/22IPv41,024US
44.20.28.0/24IPv4256US
44.20.30.0/23IPv4512US
44.20.32.0/21IPv42,048US
44.20.40.0/23IPv4512US
44.20.42.0/24IPv4256US
44.20.44.0/22IPv41,024US
44.20.48.0/20IPv44,096US
44.20.64.0/18IPv416,384US
44.20.128.0/17IPv432,768US
44.21.0.0/16IPv465,536US
44.22.0.0/15IPv4131,072US
44.24.0.0/17IPv432,768US
44.24.128.0/22IPv41,024US
44.24.132.0/23IPv4512US
44.24.134.0/24IPv4256US
44.24.136.0/21IPv42,048US
44.24.144.0/20IPv44,096US
44.24.160.0/19IPv48,192US
44.24.192.0/21IPv42,048US
44.24.204.0/22IPv41,024US
44.24.208.0/21IPv42,048US
44.24.216.0/22IPv41,024US
44.24.220.0/24IPv4256US
44.24.222.0/23IPv4512US
44.24.224.0/19IPv48,192US
44.26.0.0/18IPv416,384US
44.26.64.0/19IPv48,192US
44.26.96.0/21IPv42,048US
44.26.104.0/22IPv41,024US
44.26.108.0/23IPv4512US
44.26.111.0/24IPv4256US
44.26.112.0/20IPv44,096US
44.26.128.0/19IPv48,192US
44.26.160.0/22IPv41,024US
44.26.165.0/24IPv4256US
44.26.167.0/24IPv4256US
44.26.169.0/24IPv4256US
44.26.170.0/23IPv4512US
44.26.172.0/22IPv41,024US
44.26.176.0/20IPv44,096US
44.26.192.0/18IPv416,384US
44.28.0.0/15IPv4131,072US
44.30.0.0/24IPv4256US
44.30.2.0/23IPv4512US
44.30.5.0/24IPv4256US
44.30.8.0/23IPv4512US
44.30.11.0/24IPv4256US
44.30.12.0/23IPv4512US
44.30.19.0/24IPv4256US
44.30.21.0/24IPv4256US
44.30.25.0/24IPv4256US
44.30.32.0/24IPv4256US
44.30.39.0/24IPv4256US
44.30.40.0/23IPv4512US
44.30.43.0/24IPv4256US
44.30.45.0/24IPv4256US
44.30.48.0/23IPv4512US
44.30.50.0/24IPv4256US
44.30.53.0/24IPv4256US
44.30.54.0/24IPv4256US
44.30.59.0/24IPv4256US
44.30.60.0/23IPv4512US
44.30.67.0/24IPv4256US
44.30.68.0/24IPv4256US
44.30.74.0/24IPv4256US
44.30.77.0/24IPv4256US
44.30.80.0/24IPv4256US
44.30.82.0/24IPv4256US
44.30.85.0/24IPv4256US
44.30.86.0/24IPv4256US
44.30.91.0/24IPv4256US
44.30.93.0/24IPv4256US
44.30.98.0/23IPv4512US
44.30.100.0/24IPv4256US
44.30.102.0/24IPv4256US
44.30.105.0/24IPv4256US
44.30.108.0/24IPv4256US
44.30.112.0/24IPv4256US
44.30.114.0/24IPv4256US
44.30.116.0/24IPv4256US
44.30.118.0/24IPv4256US
44.30.123.0/24IPv4256US
44.30.124.0/23IPv4512US
44.30.129.0/24IPv4256US
44.30.144.0/23IPv4512US
44.30.147.0/24IPv4256US
44.30.148.0/23IPv4512US
44.30.153.0/24IPv4256US
44.30.154.0/23IPv4512US
44.30.156.0/24IPv4256US
44.30.159.0/24IPv4256US
44.30.161.0/24IPv4256US
44.30.166.0/23IPv4512US
44.30.173.0/24IPv4256US
44.30.176.0/22IPv41,024US
44.30.180.0/24IPv4256US
44.30.182.0/23IPv4512US
44.30.184.0/21IPv42,048US
44.30.192.0/18IPv416,384US
44.31.5.0/24IPv4256US
44.31.9.0/24IPv4256US
44.31.10.0/24IPv4256US
44.31.17.0/24IPv4256US
44.31.19.0/24IPv4256US
44.31.20.0/23IPv4512US
44.31.33.0/24IPv4256US
44.31.34.0/23IPv4512US
44.31.45.0/24IPv4256US
44.31.51.0/24IPv4256US
44.31.53.0/24IPv4256US
44.31.54.0/23IPv4512US
44.31.58.0/24IPv4256US
44.31.69.0/24IPv4256US
44.31.72.0/22IPv41,024US
44.31.77.0/24IPv4256US
44.31.79.0/24IPv4256US
44.31.85.0/24IPv4256US
44.31.87.0/24IPv4256US
44.31.98.0/24IPv4256US
44.31.104.0/24IPv4256US
44.31.108.0/24IPv4256US
44.31.110.0/24IPv4256US
44.31.112.0/23IPv4512US
44.31.114.0/24IPv4256US
44.31.137.0/24IPv4256US
44.31.143.0/24IPv4256US
44.31.152.0/21IPv42,048US
44.31.163.0/24IPv4256US
44.31.165.0/24IPv4256US
44.31.171.0/24IPv4256US
44.31.175.0/24IPv4256US
44.31.180.0/24IPv4256US
44.31.182.0/24IPv4256US
44.31.184.0/24IPv4256US
44.31.193.0/24IPv4256US
44.31.198.0/23IPv4512US
44.31.201.0/24IPv4256US
44.31.208.0/23IPv4512US
44.31.210.0/24IPv4256US
44.31.224.0/24IPv4256US
44.31.230.0/24IPv4256US
44.31.232.0/23IPv4512US
44.31.243.0/24IPv4256US
44.31.249.0/24IPv4256US
44.32.0.0/21IPv42,048US
44.32.12.0/22IPv41,024US
44.32.54.0/24IPv4256US
44.32.59.0/24IPv4256US
44.32.60.0/24IPv4256US
44.32.77.0/24IPv4256US
44.32.79.0/24IPv4256US
44.32.89.0/24IPv4256US
44.32.93.0/24IPv4256US
44.32.101.0/24IPv4256US
44.32.109.0/24IPv4256US
44.32.110.0/24IPv4256US
44.32.132.0/23IPv4512US
44.32.136.0/23IPv4512US
44.32.149.0/24IPv4256US
44.32.150.0/24IPv4256US
44.32.152.0/23IPv4512US
44.32.159.0/24IPv4256US
44.32.160.0/24IPv4256US
44.32.163.0/24IPv4256US
44.32.164.0/24IPv4256US
44.32.166.0/24IPv4256US
44.32.168.0/22IPv41,024US
44.32.172.0/23IPv4512US
44.32.174.0/24IPv4256US
44.32.188.0/23IPv4512US
44.32.196.0/24IPv4256US
44.32.198.0/24IPv4256US
44.32.203.0/24IPv4256US
44.32.208.0/20IPv44,096US
44.32.226.0/23IPv4512US
44.32.228.0/22IPv41,024US
44.32.233.0/24IPv4256US
44.32.234.0/24IPv4256US
44.32.236.0/22IPv41,024US
44.32.240.0/20IPv44,096US
44.34.0.0/18IPv416,384US
44.34.64.0/19IPv48,192US
44.34.96.0/22IPv41,024US
44.34.100.0/23IPv4512US
44.34.104.0/24IPv4256US
44.34.106.0/23IPv4512US
44.34.108.0/22IPv41,024US
44.34.112.0/20IPv44,096US
44.34.136.0/21IPv42,048US
44.34.144.0/20IPv44,096US
44.34.160.0/19IPv48,192US
44.34.192.0/18IPv416,384US
44.35.0.0/16IPv465,536US
44.36.0.0/21IPv42,048US
44.36.8.0/22IPv41,024US
44.36.12.0/23IPv4512US
44.36.15.0/24IPv4256US
44.36.16.0/24IPv4256US
44.36.19.0/24IPv4256US
44.36.20.0/22IPv41,024US
44.36.24.0/21IPv42,048US
44.36.32.0/19IPv48,192US
44.36.64.0/18IPv416,384US
44.36.128.0/18IPv416,384US
44.36.192.0/19IPv48,192US
44.36.224.0/20IPv44,096US
44.36.248.0/21IPv42,048US
44.37.0.0/16IPv465,536US
44.38.0.0/15IPv4131,072US
44.40.0.0/19IPv48,192US
44.40.32.0/21IPv42,048US
44.40.40.0/22IPv41,024US
44.40.49.0/24IPv4256US
44.40.50.0/23IPv4512US
44.40.52.0/22IPv41,024US
44.40.56.0/21IPv42,048US
44.40.64.0/18IPv416,384US
44.40.128.0/19IPv48,192US
44.40.162.0/23IPv4512US
44.40.164.0/22IPv41,024US
44.40.168.0/21IPv42,048US
44.40.176.0/20IPv44,096US
44.40.192.0/18IPv416,384US
44.41.0.0/16IPv465,536US
44.42.0.0/21IPv42,048US
44.42.8.0/24IPv4256US
44.42.10.0/23IPv4512US
44.42.12.0/22IPv41,024US
44.42.16.0/20IPv44,096US
44.42.32.0/19IPv48,192US
44.42.64.0/18IPv416,384US
44.42.128.0/17IPv432,768US
44.43.0.0/16IPv465,536US
44.44.0.0/18IPv416,384US
44.44.64.0/19IPv48,192US
44.44.96.0/20IPv44,096US
44.44.112.0/22IPv41,024US
44.44.116.0/24IPv4256US
44.44.118.0/23IPv4512US
44.44.120.0/22IPv41,024US
44.44.124.0/23IPv4512US
44.44.128.0/17IPv432,768US
44.45.0.0/16IPv465,536US
44.46.0.0/20IPv44,096US
44.46.16.0/23IPv4512US
44.46.21.0/24IPv4256US
44.46.22.0/23IPv4512US
44.46.25.0/24IPv4256US
44.46.26.0/23IPv4512US
44.46.28.0/22IPv41,024US
44.46.32.0/19IPv48,192US
44.46.64.0/18IPv416,384US
44.46.128.0/17IPv432,768US
44.47.0.0/16IPv465,536US
44.48.0.0/20IPv44,096US
44.48.17.0/24IPv4256US
44.48.18.0/23IPv4512US
44.48.20.0/22IPv41,024US
44.48.24.0/21IPv42,048US
44.48.32.0/21IPv42,048US
44.48.40.0/24IPv4256US
44.48.42.0/23IPv4512US
44.48.44.0/22IPv41,024US
44.48.48.0/20IPv44,096US
44.48.64.0/18IPv416,384US
44.48.128.0/17IPv432,768US

Capped at 400 rows to keep the page a sane size. The filter searches only what is rendered.