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.
	
	
	
		
			
				
					| ASN | 588 | 
|---|
					| Name | DIRECTRON | 
|---|
					| Organization | Headquarters, USAISC | 
|---|
					| Registry | ARIN | 
|---|
				
			 
		 
		
			
				
					| IPv4 addresses | 0 | 
|---|
					| IPv6 /64 networks | 0 | 
|---|
					| Prefixes | 0 | 
|---|
				
			 
		 
	 
	
		
			
				Other ASN allocated to Headquarters, USAISC
				
					
						
							| ASN | Name | IP addresses | 
								| 1540 | DNIC-ASBLK-01534-01546 | 1,186,048 | 
							
								| 4010 | DNIC-AS-04010 | 1,176,832 | 
							
								| 1602 | DNIC-AS-01602 | 233,216 | 
							
								| 1637 | DNIC-AS-01637 | 232,960 | 
							
								| 1649 | DNIC-AS-01649 | 148,992 | 
							
								| 747 | DNIC-AS-00747 | 147,968 | 
							
								| 1530 | DNIC-ASBLK-01529-01530 | 142,080 | 
							
								| 1493 | DNIC-ASBLK-01492-01493 | 123,648 | 
							
								| 252 | DNIC-AS-00252 | 102,912 | 
							
								| 289 | DNIC-AS-00289 | 73,728 | 
							
								| 13 | DNIC-AS-00013 | 68,864 | 
							
								| 213 | DNIC-AS-00213 | 32,768 | 
							
								| 1516 | DNIC-ASBLK-01513-01518 | 23,296 | 
							
								| 1501 | DNIC-ASBLK-01500-01502 | 18,176 | 
							
								| 1502 | DNIC-ASBLK-01500-01502 | 5,120 | 
							
								| 258 | BRAGGSRI-EGP-AS | 512 | 
							
								| 1508 | DNIC-AS-01508 | 512 | 
							
								| 1544 | DNIC-ASBLK-01534-01546 | 512 | 
							
								| 673 | DNIC-AS-00673 | 256 | 
							
								| 670 | DNIC-AS-00670 | 256 | 
							
								| 615 | DNIC-AS-00615 | 256 | 
							
								| 671 | DNIC-AS-00671 | 256 | 
							
								| 672 | DNIC-AS-00672 | 256 | 
							
								| 1523 | DNIC-ASBLK-01522-01526 | 256 | 
							
								| 1492 | DNIC-ASBLK-01492-01493 | 256 | 
							
								| 153 | CTNOSC-ASN-153 | 256 | 
							
								| 1507 | DNIC-AS-01507 | 0 | 
							
								| 1491 | DNIC-AS-01491 | 0 | 
							
								| 1509 | DNIC-ASBLK-01509-01510 | 0 | 
							
								| 1498 | DNIC-ASBLK-01498-01499 | 0 | 
							
								| 1510 | DNIC-ASBLK-01509-01510 | 0 | 
							
								| 1489 | DNIC-ASBLK-01488-01489 | 0 | 
							
								| 1511 | DNIC-AS-01511 | 0 | 
							
								| 1512 | CTNOSC-ASN-1512 | 0 | 
							
								| 1515 | DNIC-ASBLK-01513-01518 | 0 | 
							
								| 1505 | DNIC-AS-01505 | 0 | 
							
								| 1500 | DNIC-ASBLK-01500-01502 | 0 | 
							
								| 1482 | DNIC-AS-01482 | 0 | 
							
								| 1485 | DNIC-AS-01485 | 0 | 
							
								| 1495 | DNIC-ASBLK-01494-01495 | 0 | 
							
								| 1503 | DNIC-AS-01503 | 0 | 
							
								| 1488 | DNIC-ASBLK-01488-01489 | 0 | 
							
								| 1494 | DNIC-ASBLK-01494-01495 | 0 | 
							
								| 1484 | DNIC-AS-01484 | 0 | 
							
								| 1483 | DNIC-AS-01483 | 0 | 
							
								| 1490 | 20THSUPCOM | 0 | 
							
								| 1506 | WOOD-AS | 0 | 
							
								| 1504 | DNIC-AS-01504 | 0 | 
							
								| 1518 | DNIC-ASBLK-01513-01518 | 0 | 
							
								| 1538 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 1539 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 1541 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 1626 | DNIC-AS-1626 | 0 | 
							
								| 1644 | DNIC-AS-1644 | 0 | 
							
								| 2750 | CTNOSC-ASN-2750 | 0 | 
							
								| 4011 | DNIC-AS-04011 | 0 | 
							
								| 4254 | DNIC-AS-04254 | 0 | 
							
								| 4315 | DNIC-AS-04315 | 0 | 
							
								| 4380 | DNIC-AS-04380 | 0 | 
							
								| 4442 | DNIC-AS-04442 | 0 | 
							
								| 4537 | DNIC-AS-04537 | 0 | 
							
								| 1537 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 1536 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 1519 | DNIC-AS-01519 | 0 | 
							
								| 1520 | DNIC-AS-01520 | 0 | 
							
								| 1521 | DNIC-AS-01521 | 0 | 
							
								| 1524 | DNIC-ASBLK-01522-01526 | 0 | 
							
								| 1525 | DNIC-ASBLK-01522-01526 | 0 | 
							
								| 1526 | DNIC-ASBLK-01522-01526 | 0 | 
							
								| 1532 | DNIC-AS-01532 | 0 | 
							
								| 1527 | DNIC-AS-01527 | 0 | 
							
								| 1528 | DNIC-AS-01528 | 0 | 
							
								| 1531 | DNIC-AS-01531 | 0 | 
							
								| 1533 | DNIC-AS-01533 | 0 | 
							
								| 1535 | DNIC-ASBLK-01534-01546 | 0 | 
							
								| 5016 | BRAGG-NEC | 0 | 
							
								| 1481 | CTNOSC-ASN-1481 | 0 | 
							
								| 51 | DNIC-AS-00051 | 0 | 
							
								| 530 | DNIC-AS-00530 | 0 | 
							
								| 531 | DNIC-AS-00531 | 0 | 
							
								| 533 | DNIC-AS-00533 | 0 | 
							
								| 534 | DNIC-AS-00534 | 0 | 
							
								| 535 | DNIC-AS-00535 | 0 | 
							
								| 536 | DNIC-AS-00536 | 0 | 
							
								| 537 | DNIC-AS-00537 | 0 | 
							
								| 538 | DNIC-AS-00538 | 0 | 
							
								| 539 | DNIC-AS-00539 | 0 | 
							
								| 575 | DNIC-AS-00575 | 0 | 
							
								| 666 | CTNOSC-ASN-666 | 0 | 
							
								| 694 | DNIC-AS-00694 | 0 | 
							
								| 716 | DNIC-AS-00716 | 0 | 
							
								| 772 | DNIC-AS-00772 | 0 | 
							
								| 526 | DNIC-AS-00526 | 0 | 
							
								| 525 | CTNOSC-525-AS | 0 | 
							
								| 54 | DNIC-AS-00054 | 0 | 
							
								| 66 | DNIC-AS-00066 | 0 | 
							
								| 83 | DNIC-AS-00083 | 0 | 
							
								| 94 | DNIC-AS-00094 | 0 | 
							
								| 96 | DNIC-AS-00096 | 0 | 
							
								| 142 | DNIC-AS-00142 | 0 | 
							
								| 154 | DNIC-AS-00154 | 0 | 
							
								| 172 | DNIC-AS-00172 | 0 | 
							
								| 215 | DNIC-AS-00215 | 0 | 
							
								| 227 | DNIC-AS-00227 | 0 | 
							
								| 272 | CTNOSC-ASN-272 | 0 | 
							
								| 285 | DNIC-AS-00285 | 0 | 
							
								| 305 | DNIC-AS-00305 | 0 | 
							
								| 523 | DNIC-AS-00523 | 0 | 
							
								| 785 | DNIC-AS-00785 | 0 | 
							
								| 798 | DNIC-AS-00798 | 0 | 
							
								| 1462 | DNIC-ASBLK-01462-01463 | 0 | 
							
								| 1463 | DNIC-ASBLK-01462-01463 | 0 | 
							
								| 1464 | DNIC-ASBLK-01464-01465 | 0 | 
							
								| 1466 | DNIC-AS-01466 | 0 | 
							
								| 1467 | DNIC-ASBLK-01467-01468 | 0 | 
							
								| 1468 | DNIC-ASBLK-01467-01468 | 0 | 
							
								| 1471 | DNIC-ASBLK-01471-01472 | 0 | 
							
								| 1472 | DNIC-ASBLK-01471-01472 | 0 | 
							
								| 1473 | DNIC-AS-01473 | 0 | 
							
								| 1474 | DNIC-ASBLK-01474-01477 | 0 | 
							
								| 1475 | DNIC-ASBLK-01474-01477 | 0 | 
							
								| 1476 | DNIC-ASBLK-01474-01477 | 0 | 
							
								| 1477 | DNIC-ASBLK-01474-01477 | 0 | 
							
								| 1479 | DNIC-ASBLK-01478-01479 | 0 | 
							
								| 1461 | DNIC-AS-01461 | 0 | 
							
								| 1460 | DNIC-ASBLK-01458-01460 | 0 | 
							
								| 799 | DNIC-AS-00799 | 0 | 
							
								| 1210 | 3RD-US-ARMY-ASN | 0 | 
							
								| 1211 | DNIC-AS-01211 | 0 | 
							
								| 1212 | DNIC-AS-01212 | 0 | 
							
								| 1243 | DNIC-AS-01243 | 0 | 
							
								| 1259 | WRAIR-ASN | 0 | 
							
								| 1264 | USACESPK-AS | 0 | 
							
								| 1450 | DNIC-AS-01450 | 0 | 
							
								| 1451 | DNIC-ASBLK-01451-01456 | 0 | 
							
								| 1452 | DNIC-ASBLK-01451-01456 | 0 | 
							
								| 1453 | DNIC-ASBLK-01451-01456 | 0 | 
							
								| 1456 | DNIC-ASBLK-01451-01456 | 0 | 
							
								| 1457 | DNIC-AS-01457 | 0 | 
							
								| 1458 | DNIC-ASBLK-01458-01460 | 0 | 
							
								| 1480 | DNIC-AS-01480 | 0 |