Global R&E Routing Table Report 22:05 GMT Sun 25 Jul, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/ Analysis Summary ---------------- BGP routing table entries examined: 21895 Prefixes after maximum aggregation (per Origin AS): 12042 Deaggregation factor: 1.82 Unique aggregates announced (without unneeded subnets): 14333 Total ASes present in the Internet Routing Table: 2762 Prefixes per ASN: 7.93 Origin-only ASes present in the Internet Routing Table: 2363 Origin ASes announcing only one prefix: 1090 Transit ASes present in the Internet Routing Table: 399 Transit-only ASes present in the Internet Routing Table: 71 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 17 Max AS path prepend of ASN (207352) 12 Prefixes from unregistered ASNs in the Routing Table: 24 Number of instances of unregistered ASNs: 24 Number of 32-bit ASNs allocated by the RIRs: 36704 Number of 32-bit ASNs visible in the Routing Table: 593 Prefixes from 32-bit ASNs in the Routing Table: 1707 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: 7 Number of addresses announced to Internet: 288581120 Equivalent to 17 /8s, 51 /16s and 102 /24s Percentage of available address space announced: 7.8 Percentage of allocated address space announced: 7.8 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: 2836 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4677 Total APNIC prefixes after maximum aggregation: 2345 APNIC Deaggregation factor: 1.99 Prefixes being announced from the APNIC address blocks: 4734 Unique aggregates announced from the APNIC address blocks: 2740 APNIC Region origin ASes present in the Internet Routing Table: 569 APNIC Prefixes per ASN: 8.32 APNIC Region origin ASes announcing only one prefix: 240 APNIC Region transit ASes present in the Internet Routing Table: 64 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 212 Number of APNIC addresses announced to Internet: 47027456 Equivalent to 2 /8s, 205 /16s and 149 /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: 11415 Total ARIN prefixes after maximum aggregation: 6174 ARIN Deaggregation factor: 1.85 Prefixes being announced from the ARIN address blocks: 11294 Unique aggregates announced from the ARIN address blocks: 7611 ARIN Region origin ASes present in the Internet Routing Table: 1219 ARIN Prefixes per ASN: 9.26 ARIN Region origin ASes announcing only one prefix: 435 ARIN Region transit ASes present in the Internet Routing Table: 161 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 150 Number of ARIN addresses announced to Internet: 174206208 Equivalent to 10 /8s, 98 /16s and 45 /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: 3351 Total RIPE prefixes after maximum aggregation: 2729 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3429 Unique aggregates announced from the RIPE address blocks: 2852 RIPE Region origin ASes present in the Internet Routing Table: 672 RIPE Prefixes per ASN: 5.10 RIPE Region origin ASes announcing only one prefix: 324 RIPE Region transit ASes present in the Internet Routing Table: 108 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 17 Number of RIPE region 32-bit ASNs visible in the Routing Table: 131 Number of RIPE addresses announced to Internet: 59782656 Equivalent to 3 /8s, 144 /16s and 54 /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: 1543 Total LACNIC prefixes after maximum aggregation: 589 LACNIC Deaggregation factor: 2.62 Prefixes being announced from the LACNIC address blocks: 1543 Unique aggregates announced from the LACNIC address blocks: 819 LACNIC Region origin ASes present in the Internet Routing Table: 176 LACNIC Prefixes per ASN: 8.77 LACNIC Region origin ASes announcing only one prefix: 68 LACNIC Region transit ASes present in the Internet Routing Table: 28 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 74 Number of LACNIC addresses announced to Internet: 4740864 Equivalent to 0 /8s, 72 /16s and 87 /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: 885 Total AfriNIC prefixes after maximum aggregation: 187 AfriNIC Deaggregation factor: 4.73 Prefixes being announced from the AfriNIC address blocks: 888 Unique aggregates announced from the AfriNIC address blocks: 304 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 18.12 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 4.1 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2818304 Equivalent to 0 /8s, 43 /16s and 1 /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 179 330 125 UNALLOCATED 58647 164 18 2 UNALLOCATED 55824 129 19 23 UNALLOCATED 4538 124 4192 72 UNALLOCATED 4621 81 37 10 UNALLOCATED 4762 65 4 1 UNALLOCATED 23570 59 5 11 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2277 4238 803 UNALLOCATED 14618 497 3967 369 UNALLOCATED 7896 246 51 7 UNALLOCATED 376 234 180 158 UNALLOCATED 668 209 702 180 UNALLOCATED 8075 205 11189 184 UNALLOCATED 5786 201 16 1 UNALLOCATED 2152 158 507 90 UNALLOCATED 18558 137 18 4 UNALLOCATED 270 117 297 87 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 273 1996 235 UNALLOCATED 786 187 1779 185 UNALLOCATED 8895 141 24 4 UNALLOCATED 559 116 550 107 UNALLOCATED 1103 98 1520 85 UNALLOCATED 137 82 677 77 UNALLOCATED 553 72 449 72 UNALLOCATED 2200 66 647 61 UNALLOCATED 2614 62 32 59 UNALLOCATED 1930 57 81 52 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 178 207 41 UNALLOCATED 28391 152 10 66 UNALLOCATED 11340 94 24 54 UNALLOCATED 27884 93 6 2 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 Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 329 319 74 UNALLOCATED 327687 134 28 3 UNALLOCATED 36914 95 82 3 UNALLOCATED 2561 75 5 33 UNALLOCATED 8094 55 48 4 UNALLOCATED 327700 37 16 1 UNALLOCATED 37215 30 8 1 UNALLOCATED 6879 24 2 9 UNALLOCATED 37074 11 8 2 UNALLOCATED 37182 11 8 1 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2277 4238 803 UNALLOCATED 2907 607 2155 455 UNALLOCATED 14618 497 3967 369 UNALLOCATED 7497 436 214 25 UNALLOCATED 2018 329 319 74 UNALLOCATED 680 273 1996 235 UNALLOCATED 7896 246 51 7 UNALLOCATED 376 234 180 158 UNALLOCATED 668 209 702 180 UNALLOCATED 8075 205 11189 184 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 436 411 UNALLOCATED 2018 329 255 UNALLOCATED 7896 246 239 UNALLOCATED 5786 201 200 UNALLOCATED 58647 164 162 UNALLOCATED 2907 607 152 UNALLOCATED 1916 178 137 UNALLOCATED 8895 141 137 UNALLOCATED 18558 137 133 UNALLOCATED 327687 134 131 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 36843 UNALLOCATED 64.56.80.0/23 11096 UNALLOCATED 19658 UNALLOCATED 65.205.131.0/24 11096 UNALLOCATED 36843 UNALLOCATED 108.59.20.0/24 11096 UNALLOCATED 36843 UNALLOCATED 108.59.23.0/24 11096 UNALLOCATED 36843 UNALLOCATED 131.91.183.0/24 11096 UNALLOCATED 36843 UNALLOCATED 131.91.252.0/22 11096 UNALLOCATED 14822 UNALLOCATED 140.163.0.0/16 10466 UNALLOCATED 14822 UNALLOCATED 140.163.0.0/17 10466 UNALLOCATED 14822 UNALLOCATED 140.163.6.0/24 10466 UNALLOCATED 14822 UNALLOCATED 140.163.64.0/24 10466 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/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/CENIC/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: 11537 UNALLOCATED 192.107.242.0/24 Origin: 394784 UNALLOCATED Transit: 40831 UNALLOCATED 198.135.168.0/24 Origin: 14618 UNALLOCATED Transit: 16509 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/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 /9:1 /10:4 /11:7 /12:29 /13:34 /14:81 /15:194 /16:2141 /17:444 /18:452 /19:626 /20:974 /21:998 /22:1562 /23:1662 /24:12686 /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 16509 624 2277 UNALLOCATED 14618 158 497 UNALLOCATED 8895 136 141 UNALLOCATED 27884 90 93 UNALLOCATED 36914 82 95 UNALLOCATED 23024 53 113 UNALLOCATED 28614 32 38 UNALLOCATED 25977 31 45 UNALLOCATED 327700 31 37 UNALLOCATED 263282 30 37 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:5 3:75 4:2 5:15 6:4 8:2 12:1 13:210 14:84 15:19 18:41 23:26 24:6 31:6 35:1 37:6 38:9 40:3 41:137 42:22 44:5 45:74 46:10 47:1 49:10 50:8 52:596 54:107 58:2 59:20 60:4 61:4 62:7 63:38 64:123 65:12 66:66 67:58 68:18 69:42 70:7 71:9 72:19 74:39 75:128 76:165 77:8 78:3 79:10 80:14 81:32 82:5 83:7 84:4 85:36 86:9 87:1 88:1 89:11 91:54 92:1 93:12 94:4 95:5 96:6 97:1 98:8 99:173 101:2 102:9 103:313 104:102 106:1 107:24 108:21 109:8 110:3 111:21 112:4 113:1 114:23 115:1 116:4 117:61 118:35 119:19 121:29 122:11 123:8 124:42 125:8 128:81 129:178 130:116 131:110 132:60 133:137 134:93 135:1 136:204 137:158 138:11 139:16 140:50 141:3 142:61 143:41 144:65 146:126 147:72 148:167 149:16 150:47 151:8 152:77 153:11 154:25 155:57 156:64 157:29 158:47 159:120 160:32 161:20 162:54 163:69 164:48 165:22 166:1 167:20 168:164 169:10 170:109 171:1 172:10 173:24 174:1 175:32 176:11 177:8 178:3 179:13 180:21 181:11 182:6 184:6 185:53 186:3 187:18 188:14 189:6 190:138 191:35 192:1482 193:250 194:127 195:88 196:169 197:4 198:526 199:297 200:256 201:39 202:639 203:428 204:382 205:195 206:194 207:192 208:89 209:138 210:191 211:14 212:169 213:13 214:7 216:102 217:16 218:26 219:8 220:24 222:4 223:2 End of report