AS1540 Headquarters, USAISC
AS1540 (DNIC-ASBLK-01534-01546) is registered to Headquarters, USAISC in US. It originates 1,269 prefixes in the global routing table.
1,221
IPv4 prefixes
48
IPv6 prefixes
6,398,976
IPv4 addresses
0%
RPKI valid
Registration
Who holds AS1540
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
AS number
AS1540
Handle
DNIC-ASBLK-01534-01546
Organization
Headquarters, USAISC
Country
US
ASPA
None published
Routing
What AS1540 announces
Prefixes originated by AS1540 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
IPv4 prefixes
1,221
IPv6 prefixes
48
IPv4 addresses
6,398,976 (24,996 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
1,269
ROAs naming AS1540
0
With an IRR route object
0 0%
Prefixes
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
IPv4 (1,221)
6.16.52.0/246.16.66.0/246.16.67.0/246.16.70.0/246.16.71.0/246.16.72.0/246.16.73.0/246.16.80.0/246.16.81.0/246.16.90.0/246.16.91.0/246.16.92.0/246.16.93.0/246.16.94.0/246.16.95.0/246.16.96.0/246.16.97.0/246.16.100.0/246.16.101.0/246.16.102.0/246.16.103.0/246.16.104.0/246.16.105.0/246.16.106.0/246.16.107.0/246.16.112.0/246.16.113.0/246.17.80.0/246.17.88.0/216.41.0.0/166.42.192.0/226.42.196.0/226.42.200.0/226.42.204.0/226.42.208.0/226.42.212.0/226.42.216.0/226.42.220.0/226.42.224.0/226.42.228.0/226.42.232.0/226.42.243.0/246.42.244.0/246.42.245.0/246.42.246.0/246.42.247.0/246.45.32.0/226.45.36.0/226.45.40.0/226.45.44.0/226.48.64.0/206.50.40.0/246.64.138.0/236.64.146.0/246.64.151.0/246.64.152.0/246.64.157.0/246.64.159.0/246.64.162.0/246.64.163.0/246.64.166.0/246.65.4.0/246.65.6.0/246.65.8.0/226.65.16.0/246.65.20.0/226.65.26.0/246.65.27.0/246.65.34.0/246.65.35.0/246.65.36.0/226.65.40.0/246.65.44.0/226.65.48.0/236.65.50.0/246.65.51.0/246.65.58.0/246.65.59.0/246.65.130.0/236.65.132.0/236.65.134.0/236.65.136.0/236.65.138.0/236.65.140.0/236.65.142.0/236.65.144.0/236.65.146.0/236.65.148.0/236.65.150.0/236.65.152.0/236.65.154.0/236.65.156.0/236.65.158.0/236.65.160.0/236.65.162.0/236.65.164.0/236.65.166.0/236.65.168.0/236.65.170.0/236.65.172.0/236.65.174.0/236.65.176.0/236.65.178.0/236.65.180.0/236.65.182.0/236.65.184.0/236.65.186.0/236.66.66.0/236.66.68.0/236.66.70.0/236.66.72.0/236.66.74.0/236.66.76.0/236.66.78.0/236.66.80.0/236.66.82.0/236.66.84.0/236.66.86.0/236.66.88.0/236.66.90.0/23
Show 1,101 more
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6.37.240.0/24206.37.242.0/24206.37.243.0/24206.37.245.0/24206.37.253.0/24206.39.34.0/24206.39.40.0/24206.39.153.0/24206.39.155.0/24207.133.8.0/21207.133.16.0/21207.133.198.0/24207.133.205.0/24207.133.206.0/23207.133.219.0/24207.133.220.0/24214.3.67.0/24214.3.68.0/24214.3.93.0/24214.3.94.0/24214.25.86.0/23214.25.88.0/21214.25.106.0/24214.29.129.0/24214.29.130.0/23214.29.132.0/24214.29.133.0/24214.29.134.0/24214.29.135.0/24214.37.194.0/24214.37.198.0/24214.37.200.0/24214.37.205.0/24214.37.207.0/24215.1.16.0/24
IPv6 (48)
2608:100:3130::/482608:101:190::/482608:103:4f0::/482608:103:2740::/482608:104:500::/482608:104:2a20::/482608:109:15b0::/482608:122:3ff0::/482608:123:4220::/482608:124:b70::/482608:124:4d10::/482608:125:e80::/482608:125:4ee0::/482608:127:17f0::/482608:127:5ba0::/482608:128:5bc0::/482608:129:2a10::/482608:129:5bd0::/482608:140:2080::/482608:140:4190::/482608:141:48a0::/482608:142:d90::/482608:142:24a0::/482608:143:29b0::/482608:143:5450::/482608:144:2f30::/482608:146:3f10::/482608:147:3f30::/482608:147:61d0::/482608:148:1b50::/482608:148:3f60::/482608:148:61e0::/482608:149:1b80::/482608:149:3f80::/482608:160:2280::/482608:161:20::/482608:162:1660::/482608:164:c0::/482608:164:1ba0::/482608:165:2b0::/482608:165:1bc0::/482608:166:1bd0::/482608:167:1be0::/482608:180:90::/482608:181:ea0::/482608:182:42a0::/482608:183:4a30::/482608:186:2680::/48
RPKI valid RPKI invalid no ROA covers it
Neighbors
Who AS1540 is reached through
The AS just before AS1540 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.