AS121

United States Department of Defense (DoD)

AS 121 DNIC-AS-00121

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

9,728 IP addresses
ASN121
NameDNIC-AS-00121
OrganizationUnited States Department of Defense (DoD)
CountryUnited States  
RegistryARIN
IPv4 addresses9,728
IPv6 /64 networks0
Prefixes6
Other ASN allocated to United States Department of Defense (DoD)
ASN Name IP addresses
749 DNIC-AS-00749 227,729,920
56 DNIC-AS-00056 8,290,048
668 DNIC-AS-00668 2,565,888
138 DNIC-AS-00138 236,288
300 DNIC-AS-00300 96,768
687 DNIC-AS-00687 67,328
1959 DNIC-AS-01959 65,536
571 DNIC-AS-00571 46,080
2577 DNIC-AS-02577 39,168
149 DNIC-AS-00149 25,088
1208 DNIC-AS-01208 14,848
518 DNIC-AS-00518 8,704
273 DNIC-AS-00273 8,448
129 DNIC-AS-00129 8,192
228 DNIC-AS-00228 8,192
1733 DISACENT-NIPR-ASN 4,864
1904 DNIC-AS-01904 3,840
27080 DNIC-ASBLK-27032-27159 3,584
3954 DNIC-AS-03954 2,304
2621 DNIC-AS-02621 2,048
3529 DNIC-AS-03529 1,280
3471 DNIC-AS-03471 1,280
3472 DNIC-AS-03472 1,280
3474 DNIC-AS-03474 1,280
5877 DNIC-ASBLK-05800-06055 1,280
5052 DNIC-AS-05052 768
155 DNIC-AS-00155 512
1908 DNIC-AS-01908 256
126 DNIC-AS-00126 256
3470 DNIC-AS-03470 256
3531 DNIC-AS-03531 0
3530 DNIC-AS-03530 0
2741 DNIC-AS-02741 0
3532 DNIC-AS-03532 0
3528 DNIC-AS-03528 0
3533 DNIC-AS-03533 0
3534 DNIC-AS-03534 0
2632 DNIC-AS-02632 0
2630 DNIC-AS-02630 0
3535 DNIC-AS-03535 0
2744 DNIC-AS-02744 0
2745 DNIC-AS-02745 0
3466 DNIC-AS-3466 0
3469 DNIC-AS-03469 0
3419 DNIC-AS-03419 0
3418 DNIC-AS-03418 0
3468 DNIC-AS-03468 0
3417 DNIC-AS-03417 0
3473 DNIC-AS-03473 0
3416 DNIC-AS-03416 0
3467 DNIC-AS-03467 0
2748 DNIC-AS-02748 0
3536 DNIC-AS-03536 0
3537 DNIC-AS-03537 0
3538 DNIC-AS-03538 0
5031 DNIC-AS-05031 0
5037 DNIC-AS-05037 0
5159 DNIC-ASBLK-05120-05376 0
5276 AS5276 0
5935 DNIC-ASBLK-05800-06055 0
22902 DNIC-AS-22902 0
27034 DNIC-ASBLK-27032-27159 0
27044 DNIC-ASBLK-27032-27159 0
27059 DNIC-ASBLK-27032-27159 0
27067 DNIC-ASBLK-27032-27159 0
27085 DNIC-ASBLK-27032-27159 0
27091 DNIC-ASBLK-27032-27159 0
27096 DNIC-ASBLK-27032-27159 0
27097 DNIC-ASBLK-27032-27159 0
27153 DNIC-ASBLK-27032-27159 0
4909 DNIC-AS-04909 0
4564 DNIC-AS-04564 0
4536 DNIC-AS-04536 0
3539 DNIC-AS-03539 0
3540 DNIC-AS-03540 0
3541 DNIC-AS-03541 0
3542 DNIC-AS-03542 0
3543 DNIC-AS-03543 0
4303 DNIC-AS-04303 0
3544 DNIC-AS-03544 0
3545 DNIC-AS-03545 0
3546 DNIC-AS-03546 0
3547 DNIC-AS-03547 0
3696 DNIC-AS-03696 0
4165 DNIC-AS-04165 0
4170 DNIC-AS-04170 0
4252 DNIC-AS-04252 0
4379 DNIC-AS-04379 0
27155 DNIC-ASBLK-27032-27159 0
2629 DNIC-RAS-02629 0
95 DNIC-AS-00095 0
509 DNIC-AS-00509 0
512 DNIC-AS-00512 0
514 DSADC-MECH 0
515 DNIC-AS-00515 0
527 DNIC-AS-00527 0
532 DNIC-AS-00532 0
540 DNIC-AS-00540 0
552 DNIC-AS-00552 0
564 DNIC-AS-00564 0
568 DNIC-AS-00568 0
569 DNIC-AS-00569 0
573 DNIC-AS-00573 0
576 DNIC-AS-00576 0
580 DNIC-AS-00580 0
667 DNIC-AS-00667 0
354 DNIC-ASBLK-00306-00371 0
332 DNIC-ASBLK-00306-00371 0
115 DNIC-AS-00115 0
118 DNIC-AS-00118 0
124 DNIC-AS-00124 0
135 DNIC-AS-00135 0
140 DNIC-AS-00140 0
147 DNIC-AS-00147 0
150 DNIC-AS-00150 0
164 DNIC-AS-00164 0
165 DNIC-AS-00165 0
170 DNIC-AS-00170 0
198 DNIC-AS-00198 0
39 DNIC-AS-00039 0
244 DNIC-AS-00244 0
295 USTCCLOUD 0
303 DNIC-AS-00303 0
678 DNIC-AS-00678 0
717 DNIC-AS-00717 0
1925 DNIC-AS-01925 0
1971 DNIC-AS-01971 0
2032 DNIC-AS-02032 0
2046 DNIC-AS-02046 0
2054 DNIC-AS-02054 0
2137 DNIC-AS-02137 0
2141 DNIC-AS-02141 0
2275 DNIC-AS-02275 0
2531 DNIC-AS-02531 0
2622 DNIC-AS-02622 0
2623 DNIC-AS-02623 0
2624 DNIC-AS-02624 0
2625 DNIC-RAS-02625 0
2626 DNIC-AS-02626 0
2627 DNIC-AS-02627 0
1918 DNIC-AS-01918 0
1912 DNIC-ASBLK-01910-01914 0
718 DNIC-AS-00718 0
748 DNIC-AS-00748 0
765 DNIC-AS-00765 0
767 DNIC-AS-00767 0
769 DNIC-AS-00769 0
770 DNIC-AS-00770 0
787 DNIC-AS-00787 0
1247 DNIC-RAS-01247 0
1291 DNIC-AS-01291 0
1298 DNIC-AS-01298 0
1314 DNIC-AS-01314 0
1727 DNIC-AS-01727 0
1765 DNIC-AS-01765 0
1778 DNIC-AS-01778 0
1834 DNIC-AS-01834 0
2628 DNIC-AS-02628 0
IPv4 Prefixes for AS121
Network Location Addresses
214.54.192.0/20 DoD Network Information Center   Columbus 4,096
214.54.208.0/20 DoD Network Information Center   Columbus 4,096
214.54.224.0/23 DoD Network Information Center   Columbus 512
214.54.226.0/23 DoD Network Information Center   Columbus 512
214.54.230.0/24 DoD Network Information Center   Columbus 256
214.54.231.0/24 DoD Network Information Center   Columbus 256