Global R&E Routing Table Report 22:20 GMT Sun 25 Jul, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 19256 Prefixes after maximum aggregation (per Origin AS): 11205 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 12778 Total ASes present in the Internet Routing Table: 2844 Prefixes per ASN: 6.77 Origin-only ASes present in the Internet Routing Table: 2416 Origin ASes announcing only one prefix: 1101 Transit ASes present in the Internet Routing Table: 428 Transit-only ASes present in the Internet Routing Table: 86 Average AS path length visible in the Internet Routing Table: 3.8 Max AS path length visible: 17 Max AS path prepend of ASN (207352) 12 Prefixes from unregistered ASNs in the Routing Table: 43 Number of instances of unregistered ASNs: 43 Number of 32-bit ASNs allocated by the RIRs: 36704 Number of 32-bit ASNs visible in the Routing Table: 542 Prefixes from 32-bit ASNs in the Routing Table: 1563 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 5 Number of addresses announced to Internet: 179118336 Equivalent to 10 /8s, 173 /16s and 33 /24s Percentage of available address space announced: 4.8 Percentage of allocated address space announced: 4.8 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 2280 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4197 Total APNIC prefixes after maximum aggregation: 2138 APNIC Deaggregation factor: 1.96 Prefixes being announced from the APNIC address blocks: 4186 Unique aggregates announced from the APNIC address blocks: 2485 APNIC Region origin ASes present in the Internet Routing Table: 468 APNIC Prefixes per ASN: 8.94 APNIC Region origin ASes announcing only one prefix: 185 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 3.8 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 135 Number of APNIC addresses announced to Internet: 36268288 Equivalent to 2 /8s, 41 /16s and 105 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-147769 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 9767 Total ARIN prefixes after maximum aggregation: 5668 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 9748 Unique aggregates announced from the ARIN address blocks: 6540 ARIN Region origin ASes present in the Internet Routing Table: 1431 ARIN Prefixes per ASN: 6.81 ARIN Region origin ASes announcing only one prefix: 521 ARIN Region transit ASes present in the Internet Routing Table: 205 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 16 Number of ARIN region 32-bit ASNs visible in the Routing Table: 194 Number of ARIN addresses announced to Internet: 82347264 Equivalent to 4 /8s, 232 /16s and 133 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 3108 Total RIPE prefixes after maximum aggregation: 2660 RIPE Deaggregation factor: 1.17 Prefixes being announced from the RIPE address blocks: 3176 Unique aggregates announced from the RIPE address blocks: 2761 RIPE Region origin ASes present in the Internet Routing Table: 649 RIPE Prefixes per ASN: 4.89 RIPE Region origin ASes announcing only one prefix: 311 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 17 Number of RIPE region 32-bit ASNs visible in the Routing Table: 128 Number of RIPE addresses announced to Internet: 53799936 Equivalent to 3 /8s, 52 /16s and 236 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 1372 Total LACNIC prefixes after maximum aggregation: 558 LACNIC Deaggregation factor: 2.46 Prefixes being announced from the LACNIC address blocks: 1371 Unique aggregates announced from the LACNIC address blocks: 761 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 8.68 LACNIC Region origin ASes announcing only one prefix: 62 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4129024 Equivalent to 0 /8s, 63 /16s and 1 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-272796 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 769 Total AfriNIC prefixes after maximum aggregation: 156 AfriNIC Deaggregation factor: 4.93 Prefixes being announced from the AfriNIC address blocks: 770 Unique aggregates announced from the AfriNIC address blocks: 226 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 17.11 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.6 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 2568704 Equivalent to 0 /8s, 39 /16s and 50 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 607 2155 455 UNALLOCATED 7497 436 214 25 UNALLOCATED 1237 189 75 137 UNALLOCATED 7575 176 330 122 UNALLOCATED 58647 164 18 2 UNALLOCATED 4538 107 2368 69 UNALLOCATED 4621 81 37 10 UNALLOCATED 4762 65 4 1 UNALLOCATED 23570 59 5 11 UNALLOCATED 24151 54 4 20 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7896 246 51 7 UNALLOCATED 376 228 180 157 UNALLOCATED 668 206 717 172 UNALLOCATED 5786 201 16 1 UNALLOCATED 2152 157 507 90 UNALLOCATED 18558 137 18 4 UNALLOCATED 23024 113 7 20 UNALLOCATED 270 112 297 87 UNALLOCATED 2920 109 34 6 UNALLOCATED 11404 86 174 70 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 272 1964 238 UNALLOCATED 786 187 1779 185 UNALLOCATED 559 116 550 107 UNALLOCATED 1103 96 1263 83 UNALLOCATED 137 82 677 77 UNALLOCATED 553 72 449 72 UNALLOCATED 2200 66 647 61 UNALLOCATED 2614 62 32 59 UNALLOCATED 1930 56 80 51 UNALLOCATED 1653 52 151 49 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 175 207 41 UNALLOCATED 28391 152 10 66 UNALLOCATED 11340 92 24 54 UNALLOCATED 1251 65 37 20 UNALLOCATED 2715 60 102 40 UNALLOCATED 4270 44 16 1 UNALLOCATED 19611 44 17 2 UNALLOCATED 61468 41 3 15 UNALLOCATED 28614 38 2 2 UNALLOCATED 28571 37 26 15 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 328 319 73 UNALLOCATED 327687 133 28 3 UNALLOCATED 36914 95 82 3 UNALLOCATED 8094 55 48 4 UNALLOCATED 327700 37 16 1 UNALLOCATED 6879 24 2 9 UNALLOCATED 37074 11 8 2 UNALLOCATED 37501 11 49 6 UNALLOCATED 36982 8 33 8 UNALLOCATED 2561 6 0 5 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 607 2155 455 UNALLOCATED 7497 436 214 25 UNALLOCATED 2018 328 319 73 UNALLOCATED 680 272 1964 238 UNALLOCATED 7896 246 51 7 UNALLOCATED 376 228 180 157 UNALLOCATED 668 206 717 172 UNALLOCATED 5786 201 16 1 UNALLOCATED 1237 189 75 137 UNALLOCATED 786 187 1779 185 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 436 411 UNALLOCATED 2018 328 255 UNALLOCATED 7896 246 239 UNALLOCATED 5786 201 200 UNALLOCATED 58647 164 162 UNALLOCATED 1916 175 134 UNALLOCATED 18558 137 133 UNALLOCATED 327687 133 130 UNALLOCATED 2920 109 103 UNALLOCATED 23024 113 93 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 19176 UNALLOCATED 63.81.146.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.108.136.0/23 32278 UNALLOCATED 19176 UNALLOCATED 63.108.136.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.108.137.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.108.138.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.127.160.0/22 32278 UNALLOCATED 19176 UNALLOCATED 63.127.161.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.127.162.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.127.163.0/24 32278 UNALLOCATED 19176 UNALLOCATED 63.127.168.0/21 32278 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.240.0/20 Origin: 328439 UNALLOCATED Transit: 327992 UNALLOCATED 192.31.196.0/24 Origin: 112 UNALLOCATED Transit: 1103 UNALLOCATED 192.88.99.0/24 Origin: 1103 UNALLOCATED Transit: 293 UNALLOCATED 192.107.242.0/24 Origin: 394784 UNALLOCATED Transit: 40831 UNALLOCATED 205.166.145.0/24 Origin: 394784 UNALLOCATED Transit: 40831 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:0 /10:0 /11:0 /12:0 /13:0 /14:37 /15:118 /16:2052 /17:388 /18:434 /19:618 /20:945 /21:997 /22:1573 /23:1615 /24:10479 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 82 95 UNALLOCATED 30041 64 64 UNALLOCATED 23024 53 113 UNALLOCATED 28614 32 38 UNALLOCATED 25977 31 45 UNALLOCATED 327700 31 37 UNALLOCATED 18530 30 78 UNALLOCATED 263282 30 37 UNALLOCATED 16713 29 36 UNALLOCATED 18632 29 55 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:5 5:15 6:4 8:5 12:1 18:41 23:17 24:5 31:6 35:1 37:6 38:19 40:1 41:110 42:26 44:5 45:37 46:8 47:1 49:6 50:12 52:29 58:1 59:20 60:4 61:4 62:6 63:86 64:131 65:15 66:79 67:60 68:19 69:59 70:1 71:1 72:50 74:33 75:1 76:38 77:6 78:3 79:10 80:14 81:32 82:4 83:7 84:4 85:33 86:3 87:2 88:1 89:10 91:34 92:1 93:12 94:5 95:5 96:5 97:1 98:4 101:2 102:6 103:189 104:85 106:1 107:30 108:10 109:3 110:3 111:20 112:4 114:23 115:1 116:4 117:61 118:35 119:19 121:29 122:8 123:8 124:43 125:13 128:81 129:174 130:95 131:100 132:60 133:137 134:93 136:212 137:148 138:10 139:5 140:46 141:3 142:42 143:35 144:32 146:197 147:71 148:161 149:14 150:41 151:7 152:80 153:11 154:22 155:51 156:64 157:28 158:10 159:117 160:31 161:56 162:44 163:63 164:23 165:16 166:2 167:16 168:139 169:9 170:68 171:1 172:2 173:23 174:7 175:32 177:7 178:1 179:12 180:6 181:11 182:5 184:7 185:39 186:3 187:17 188:13 189:6 190:40 191:30 192:1474 193:199 194:129 195:57 196:163 197:4 198:538 199:319 200:252 201:39 202:594 203:414 204:402 205:182 206:216 207:186 208:117 209:138 210:184 211:14 212:38 213:4 214:7 216:95 217:16 218:26 219:8 220:21 222:4 223:2 End of report