Address space

AS52 UCLA

IPv4 prefixes 29 329K addresses

IPv6 prefixes 164

Most common size /24 IPv4

Flagged 150

Shape

Prefix sizes

IPv4

/16

/17

/18

/20

/21

/22

/23

/24

/25

/26

/27

/28

/29

/30

/31

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

/34

/35

/36

/37

/38

/39

/41

/42

/43

/44

/45

/46

/47

/48

/49

/50

/51

/52

/53

/54

/55

/56

/57

/58

/59

/60

/62

/63

/64

/65

/66

/67

/68

/69

/70

/71

/72

/73

/74

/75

/76

/77

/78

/79

/80

/81

/82

/83

/84

/85

/86

/87

/88

/89

/90

/91

/92

/93

/94

/95

/96

/97

/98

/99

/100

/101

/102

/103

/104

/105

/106

/107

/108

/109

/110

/111

/112

/113

/114

/115

/116

/117

/118

/119

/120

/121

/122

/123

Geography

Where the space lands

Country	Name	Prefixes
US	United States of America	193

Review

Flagged prefixes

150 of 193

Prefix	Family	Addresses	Country	Flags
137.164.24.124/31	IPv4	2	US	Too specific
137.164.24.134/31	IPv4	2	US	Too specific
137.164.24.220/30	IPv4	4	US	Too specific
169.232.34.0/27	IPv4	32	US	Too specific
169.232.34.32/28	IPv4	16	US	Too specific
169.232.34.48/30	IPv4	4	US	Too specific
169.232.34.52/30	IPv4	4	US	Too specific
169.232.34.56/29	IPv4	8	US	Too specific
169.232.34.64/26	IPv4	64	US	Too specific
169.232.34.128/25	IPv4	128	US	Too specific
2607:f010:3fe::/63	IPv6	—	US	Too specific
2607:f010:3fe:2::/64	IPv6	—	US	Too specific
2607:f010:3fe:3::/89	IPv6	—	US	Too specific
2607:f010:3fe:3:0:80::/90	IPv6	—	US	Too specific
2607:f010:3fe:3:0:c0::/91	IPv6	—	US	Too specific
2607:f010:3fe:3:0:e0::/92	IPv6	—	US	Too specific
2607:f010:3fe:3:0:f0::/93	IPv6	—	US	Too specific
2607:f010:3fe:3:0:f8::/94	IPv6	—	US	Too specific
2607:f010:3fe:3:0:fc::/95	IPv6	—	US	Too specific
2607:f010:3fe:3:0:fe::/96	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff::/97	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:8000:0/98	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:c000:0/99	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:e000:0/100	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:f000:0/101	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:f800:0/102	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fc00:0/103	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:0/123	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:20/123	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:40/122	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:80/121	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:100/120	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:200/119	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:400/118	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:800/117	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:1000/116	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:2000/115	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:4000/114	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:8000/113	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe01:0/112	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe02:0/111	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe04:0/110	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe08:0/109	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe10:0/108	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe20:0/107	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe40:0/106	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe80:0/105	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:ff00:0/104	IPv6	—	US	Too specific
2607:f010:3fe:3:0:100::/88	IPv6	—	US	Too specific
2607:f010:3fe:3:0:200::/87	IPv6	—	US	Too specific
2607:f010:3fe:3:0:400::/86	IPv6	—	US	Too specific
2607:f010:3fe:3:0:800::/85	IPv6	—	US	Too specific
2607:f010:3fe:3:0:1000::/84	IPv6	—	US	Too specific
2607:f010:3fe:3:0:2000::/83	IPv6	—	US	Too specific
2607:f010:3fe:3:0:4000::/82	IPv6	—	US	Too specific
2607:f010:3fe:3:0:8000::/81	IPv6	—	US	Too specific
2607:f010:3fe:3:1::/80	IPv6	—	US	Too specific
2607:f010:3fe:3:2::/79	IPv6	—	US	Too specific
2607:f010:3fe:3:4::/78	IPv6	—	US	Too specific
2607:f010:3fe:3:8::/77	IPv6	—	US	Too specific
2607:f010:3fe:3:10::/76	IPv6	—	US	Too specific
2607:f010:3fe:3:20::/75	IPv6	—	US	Too specific
2607:f010:3fe:3:40::/74	IPv6	—	US	Too specific
2607:f010:3fe:3:80::/73	IPv6	—	US	Too specific
2607:f010:3fe:3:100::/72	IPv6	—	US	Too specific
2607:f010:3fe:3:200::/71	IPv6	—	US	Too specific
2607:f010:3fe:3:400::/70	IPv6	—	US	Too specific
2607:f010:3fe:3:800::/69	IPv6	—	US	Too specific
2607:f010:3fe:3:1000::/68	IPv6	—	US	Too specific
2607:f010:3fe:3:2000::/67	IPv6	—	US	Too specific
2607:f010:3fe:3:4000::/66	IPv6	—	US	Too specific
2607:f010:3fe:3:8000::/65	IPv6	—	US	Too specific
2607:f010:3fe:4::/62	IPv6	—	US	Too specific
2607:f010:3fe:8::/63	IPv6	—	US	Too specific
2607:f010:3fe:a::/64	IPv6	—	US	Too specific
2607:f010:3fe:b::/89	IPv6	—	US	Too specific
2607:f010:3fe:b:0:80::/90	IPv6	—	US	Too specific
2607:f010:3fe:b:0:c0::/91	IPv6	—	US	Too specific
2607:f010:3fe:b:0:e0::/92	IPv6	—	US	Too specific
2607:f010:3fe:b:0:f0::/93	IPv6	—	US	Too specific
2607:f010:3fe:b:0:f8::/94	IPv6	—	US	Too specific
2607:f010:3fe:b:0:fc::/95	IPv6	—	US	Too specific
2607:f010:3fe:b:0:fe::/96	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff::/97	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:8000:0/98	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:c000:0/99	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:e000:0/100	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:f000:0/101	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:f800:0/102	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fc00:0/103	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:0/123	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:20/123	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:40/122	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:80/121	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:100/120	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:200/119	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:400/118	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:800/117	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:1000/116	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:2000/115	IPv6	—	US	Too 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

193 total

Prefix	Family	Addresses	Country	Flags
128.97.0.0/16	IPv4	65,536	US
131.179.0.0/16	IPv4	65,536	US
137.164.24.124/31	IPv4	2	US	Too specific
137.164.24.134/31	IPv4	2	US	Too specific
137.164.24.220/30	IPv4	4	US	Too specific
149.142.0.0/16	IPv4	65,536	US
164.67.0.0/16	IPv4	65,536	US
169.232.0.0/20	IPv4	4,096	US
169.232.16.0/21	IPv4	2,048	US
169.232.24.0/21	IPv4	2,048	US
169.232.32.0/23	IPv4	512	US
169.232.34.0/27	IPv4	32	US	Too specific
169.232.34.32/28	IPv4	16	US	Too specific
169.232.34.48/30	IPv4	4	US	Too specific
169.232.34.52/30	IPv4	4	US	Too specific
169.232.34.56/29	IPv4	8	US	Too specific
169.232.34.64/26	IPv4	64	US	Too specific
169.232.34.128/25	IPv4	128	US	Too specific
169.232.35.0/24	IPv4	256	US
169.232.36.0/22	IPv4	1,024	US
169.232.40.0/21	IPv4	2,048	US
169.232.48.0/20	IPv4	4,096	US
169.232.64.0/18	IPv4	16,384	US
169.232.128.0/17	IPv4	32,768	US
192.35.221.0/24	IPv4	256	US
192.35.225.0/24	IPv4	256	US
192.35.226.0/24	IPv4	256	US
192.154.2.0/24	IPv4	256	US
216.41.228.0/24	IPv4	256	US
2607:f010::/39	IPv6	—	US
2607:f010:200::/41	IPv6	—	US
2607:f010:280::/42	IPv6	—	US
2607:f010:2c0::/43	IPv6	—	US
2607:f010:2e0::/48	IPv6	—	US
2607:f010:2e1::/48	IPv6	—	US
2607:f010:2e2::/47	IPv6	—	US
2607:f010:2e4::/46	IPv6	—	US
2607:f010:2e8::/45	IPv6	—	US
2607:f010:2f0::/44	IPv6	—	US
2607:f010:300::/41	IPv6	—	US
2607:f010:380::/42	IPv6	—	US
2607:f010:3c0::/43	IPv6	—	US
2607:f010:3e0::/44	IPv6	—	US
2607:f010:3f0::/45	IPv6	—	US
2607:f010:3f8::/46	IPv6	—	US
2607:f010:3fc::/47	IPv6	—	US
2607:f010:3fe::/63	IPv6	—	US	Too specific
2607:f010:3fe:2::/64	IPv6	—	US	Too specific
2607:f010:3fe:3::/89	IPv6	—	US	Too specific
2607:f010:3fe:3:0:80::/90	IPv6	—	US	Too specific
2607:f010:3fe:3:0:c0::/91	IPv6	—	US	Too specific
2607:f010:3fe:3:0:e0::/92	IPv6	—	US	Too specific
2607:f010:3fe:3:0:f0::/93	IPv6	—	US	Too specific
2607:f010:3fe:3:0:f8::/94	IPv6	—	US	Too specific
2607:f010:3fe:3:0:fc::/95	IPv6	—	US	Too specific
2607:f010:3fe:3:0:fe::/96	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff::/97	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:8000:0/98	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:c000:0/99	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:e000:0/100	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:f000:0/101	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:f800:0/102	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fc00:0/103	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:0/123	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:20/123	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:40/122	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:80/121	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:100/120	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:200/119	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:400/118	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:800/117	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:1000/116	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:2000/115	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:4000/114	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe00:8000/113	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe01:0/112	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe02:0/111	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe04:0/110	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe08:0/109	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe10:0/108	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe20:0/107	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe40:0/106	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:fe80:0/105	IPv6	—	US	Too specific
2607:f010:3fe:3:0:ff:ff00:0/104	IPv6	—	US	Too specific
2607:f010:3fe:3:0:100::/88	IPv6	—	US	Too specific
2607:f010:3fe:3:0:200::/87	IPv6	—	US	Too specific
2607:f010:3fe:3:0:400::/86	IPv6	—	US	Too specific
2607:f010:3fe:3:0:800::/85	IPv6	—	US	Too specific
2607:f010:3fe:3:0:1000::/84	IPv6	—	US	Too specific
2607:f010:3fe:3:0:2000::/83	IPv6	—	US	Too specific
2607:f010:3fe:3:0:4000::/82	IPv6	—	US	Too specific
2607:f010:3fe:3:0:8000::/81	IPv6	—	US	Too specific
2607:f010:3fe:3:1::/80	IPv6	—	US	Too specific
2607:f010:3fe:3:2::/79	IPv6	—	US	Too specific
2607:f010:3fe:3:4::/78	IPv6	—	US	Too specific
2607:f010:3fe:3:8::/77	IPv6	—	US	Too specific
2607:f010:3fe:3:10::/76	IPv6	—	US	Too specific
2607:f010:3fe:3:20::/75	IPv6	—	US	Too specific
2607:f010:3fe:3:40::/74	IPv6	—	US	Too specific
2607:f010:3fe:3:80::/73	IPv6	—	US	Too specific
2607:f010:3fe:3:100::/72	IPv6	—	US	Too specific
2607:f010:3fe:3:200::/71	IPv6	—	US	Too specific
2607:f010:3fe:3:400::/70	IPv6	—	US	Too specific
2607:f010:3fe:3:800::/69	IPv6	—	US	Too specific
2607:f010:3fe:3:1000::/68	IPv6	—	US	Too specific
2607:f010:3fe:3:2000::/67	IPv6	—	US	Too specific
2607:f010:3fe:3:4000::/66	IPv6	—	US	Too specific
2607:f010:3fe:3:8000::/65	IPv6	—	US	Too specific
2607:f010:3fe:4::/62	IPv6	—	US	Too specific
2607:f010:3fe:8::/63	IPv6	—	US	Too specific
2607:f010:3fe:a::/64	IPv6	—	US	Too specific
2607:f010:3fe:b::/89	IPv6	—	US	Too specific
2607:f010:3fe:b:0:80::/90	IPv6	—	US	Too specific
2607:f010:3fe:b:0:c0::/91	IPv6	—	US	Too specific
2607:f010:3fe:b:0:e0::/92	IPv6	—	US	Too specific
2607:f010:3fe:b:0:f0::/93	IPv6	—	US	Too specific
2607:f010:3fe:b:0:f8::/94	IPv6	—	US	Too specific
2607:f010:3fe:b:0:fc::/95	IPv6	—	US	Too specific
2607:f010:3fe:b:0:fe::/96	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff::/97	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:8000:0/98	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:c000:0/99	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:e000:0/100	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:f000:0/101	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:f800:0/102	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fc00:0/103	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:0/123	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:20/123	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:40/122	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:80/121	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:100/120	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:200/119	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:400/118	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:800/117	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:1000/116	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:2000/115	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:4000/114	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe00:8000/113	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe01:0/112	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe02:0/111	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe04:0/110	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe08:0/109	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe10:0/108	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe20:0/107	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe40:0/106	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:fe80:0/105	IPv6	—	US	Too specific
2607:f010:3fe:b:0:ff:ff00:0/104	IPv6	—	US	Too specific
2607:f010:3fe:b:0:100::/88	IPv6	—	US	Too specific
2607:f010:3fe:b:0:200::/87	IPv6	—	US	Too specific
2607:f010:3fe:b:0:400::/86	IPv6	—	US	Too specific
2607:f010:3fe:b:0:800::/85	IPv6	—	US	Too specific
2607:f010:3fe:b:0:1000::/84	IPv6	—	US	Too specific
2607:f010:3fe:b:0:2000::/83	IPv6	—	US	Too specific
2607:f010:3fe:b:0:4000::/82	IPv6	—	US	Too specific
2607:f010:3fe:b:0:8000::/81	IPv6	—	US	Too specific
2607:f010:3fe:b:1::/80	IPv6	—	US	Too specific
2607:f010:3fe:b:2::/79	IPv6	—	US	Too specific
2607:f010:3fe:b:4::/78	IPv6	—	US	Too specific
2607:f010:3fe:b:8::/77	IPv6	—	US	Too specific
2607:f010:3fe:b:10::/76	IPv6	—	US	Too specific
2607:f010:3fe:b:20::/75	IPv6	—	US	Too specific
2607:f010:3fe:b:40::/74	IPv6	—	US	Too specific
2607:f010:3fe:b:80::/73	IPv6	—	US	Too specific
2607:f010:3fe:b:100::/72	IPv6	—	US	Too specific
2607:f010:3fe:b:200::/71	IPv6	—	US	Too specific
2607:f010:3fe:b:400::/70	IPv6	—	US	Too specific
2607:f010:3fe:b:800::/69	IPv6	—	US	Too specific
2607:f010:3fe:b:1000::/68	IPv6	—	US	Too specific
2607:f010:3fe:b:2000::/67	IPv6	—	US	Too specific
2607:f010:3fe:b:4000::/66	IPv6	—	US	Too specific
2607:f010:3fe:b:8000::/65	IPv6	—	US	Too specific
2607:f010:3fe:c::/62	IPv6	—	US	Too specific
2607:f010:3fe:10::/60	IPv6	—	US	Too specific
2607:f010:3fe:20::/59	IPv6	—	US	Too specific
2607:f010:3fe:40::/58	IPv6	—	US	Too specific
2607:f010:3fe:80::/57	IPv6	—	US	Too specific
2607:f010:3fe:100::/56	IPv6	—	US	Too specific
2607:f010:3fe:200::/55	IPv6	—	US	Too specific
2607:f010:3fe:400::/54	IPv6	—	US	Too specific
2607:f010:3fe:800::/53	IPv6	—	US	Too specific
2607:f010:3fe:1000::/52	IPv6	—	US	Too specific
2607:f010:3fe:2000::/51	IPv6	—	US	Too specific
2607:f010:3fe:4000::/50	IPv6	—	US	Too specific
2607:f010:3fe:8000::/49	IPv6	—	US	Too specific
2607:f010:3ff::/48	IPv6	—	US
2607:f010:400::/38	IPv6	—	US
2607:f010:800::/37	IPv6	—	US
2607:f010:1000::/36	IPv6	—	US
2607:f010:2000::/35	IPv6	—	US
2607:f010:4000::/34	IPv6	—	US
2607:f010:8000::/33	IPv6	—	US
2607:f380:1::118:6a41:8860/123	IPv6	—	US	Too specific
2607:f380:1::118:9a41:8dc0/122	IPv6	—	US	Too specific