IPv4 R&E Routing Table Report 22:20 GMT Thu 04 Apr, 2024 IPv4 BGP Table (R&E) as seen at ESnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 18195 Prefixes after maximum aggregation (per Origin AS): 10543 Deaggregation factor: 1.73 Unique aggregates announced (without unneeded subnets): 11633 Number of IPv4 prefixes with a valid ROA: 5296 Number of IPv4 prefixes with an invalid ROA: 45 Number of IPv4 prefixes with no ROA: 12854 Total ASes present in the Internet Routing Table: 2726 Prefixes per ASN: 6.67 Origin-only ASes present in the Internet Routing Table: 2370 Origin ASes announcing only one prefix: 1064 Transit ASes present in the Internet Routing Table: 356 Transit-only ASes present in the Internet Routing Table: 59 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.7 Max AS path length visible: 14 Max AS path prepend of ASN ( 47805) 11 Prefixes from unregistered ASNs in the Routing Table: 14 Number of instances of unregistered ASNs: 14 Number of 32-bit ASNs allocated by the RIRs: 44008 Number of 32-bit ASNs visible in the Routing Table: 640 Prefixes from 32-bit ASNs in the Routing Table: 1785 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 0 Number of addresses announced to Internet: 176270848 Equivalent to 10 /8s, 129 /16s and 174 /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: 99.6 Total number of prefixes smaller than registry allocations: 1935 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4238 Total APNIC prefixes after maximum aggregation: 2155 APNIC Deaggregation factor: 1.97 Prefixes being announced from the APNIC address blocks: 4239 Unique aggregates announced from the APNIC address blocks: 2420 APNIC Region origin ASes present in the Internet Routing Table: 499 APNIC Prefixes per ASN: 8.49 APNIC Region origin ASes announcing only one prefix: 220 APNIC Region transit ASes present in the Internet Routing Table: 45 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 186 Number of APNIC addresses announced to Internet: 35476736 Equivalent to 2 /8s, 29 /16s and 85 /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, 131072-153913 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: 8331 Total ARIN prefixes after maximum aggregation: 4896 ARIN Deaggregation factor: 1.70 Prefixes being announced from the ARIN address blocks: 8354 Unique aggregates announced from the ARIN address blocks: 5449 ARIN Region origin ASes present in the Internet Routing Table: 1299 ARIN Prefixes per ASN: 6.43 ARIN Region origin ASes announcing only one prefix: 463 ARIN Region transit ASes present in the Internet Routing Table: 163 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 215 Number of ARIN addresses announced to Internet: 80065280 Equivalent to 4 /8s, 197 /16s and 179 /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: 3467 Total RIPE prefixes after maximum aggregation: 2790 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3458 Unique aggregates announced from the RIPE address blocks: 2843 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.22 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 98 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 148 Number of RIPE addresses announced to Internet: 54005248 Equivalent to 3 /8s, 56 /16s and 14 /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 196608-216475 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: 1327 Total LACNIC prefixes after maximum aggregation: 518 LACNIC Deaggregation factor: 2.56 Prefixes being announced from the LACNIC address blocks: 1326 Unique aggregates announced from the LACNIC address blocks: 701 LACNIC Region origin ASes present in the Internet Routing Table: 153 LACNIC Prefixes per ASN: 8.67 LACNIC Region origin ASes announcing only one prefix: 53 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63 Number of LACNIC addresses announced to Internet: 4216064 Equivalent to 0 /8s, 64 /16s and 85 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 818 Total AfriNIC prefixes after maximum aggregation: 172 AfriNIC Deaggregation factor: 4.76 Prefixes being announced from the AfriNIC address blocks: 818 Unique aggregates announced from the AfriNIC address blocks: 220 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 16.36 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.1 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 2507520 Equivalent to 0 /8s, 38 /16s and 67 /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 590 2162 464 SINET-AS Research Organization of Infor 7497 437 180 24 CSTNET-AS-AP Computer Network Informati 1237 184 74 139 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Re 55824 131 19 19 NKN-CORE-NW NKN Core Network, IN 4538 111 2384 69 ERX-CERNET-BKB China Education and Rese 4762 71 4 1 MAHIDOL-BORDER-AS Mahidol University, T 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 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 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2152 147 507 96 CSUNET-NW, US 18558 140 18 4 NETBLK-RCOEK, US 81 126 473 31 NCREN, US 270 114 328 78 AS270, US 23024 108 7 22 OCDE, US 2920 102 34 7 LACOE, US 237 90 544 55 MERIT-AS-14, US 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 680 284 1899 250 DFN Verein zur Foerderung eines Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 8895 132 24 4 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch 1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 77 44 68 RUNNET, RU 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 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 1916 141 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 108 25 51 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 48 16 1 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 2715 43 99 32 Fundacao Carlos Chagas Filho de Amparo 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 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 380 319 71 TENET-1, ZA 36914 206 82 3 KENET-AS, KE 8094 47 48 18 PUKNET, ZA 327700 45 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 37215 9 8 1 MAREN, MW 36982 8 33 8 UCT, ZA 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 590 2162 464 SINET-AS Research Organization of Infor 7497 437 180 24 CSTNET-AS-AP Computer Network Informati 2018 380 319 71 TENET-1, ZA 680 284 1899 250 DFN Verein zur Foerderung eines Deutsch 36914 206 82 3 KENET-AS, KE 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 786 186 1767 183 JANET Jisc Services Limited, GB 1237 184 74 139 KREONET-AS-KR KISTI, KR 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 437 413 CSTNET-AS-AP Computer Network Information Cente 2018 380 309 TENET-1, ZA 36914 206 203 KENET-AS, KE 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 18558 140 136 NETBLK-RCOEK, US 8895 132 128 ISU Internet Services Unit ISU, SA 55824 131 112 NKN-CORE-NW NKN Core Network, IN 1916 141 99 Rede Nacional de Ensino e Pesquisa, BR 81 126 95 NCREN, US 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 11570 UNALLOCATED 63.225.1.0/24 40498 ABQG, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US 11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.190.0/24 40498 ABQG, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS 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 /14:35 /15:121 /16:2021 /17:424 /18:443 /19:571 /20:862 /21:876 /22:1500 /23:1530 /24:9812 /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 193 206 KENET-AS, KE 8895 127 132 ISU Internet Services Unit ISU, SA 23024 51 108 OCDE, US 327700 39 45 MoRENet, MZ 32440 38 62 LONI, US 3267 35 77 RUNNET, RU 18632 33 66 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:5 12:2 14:91 18:43 23:9 24:3 31:1 35:8 38:11 40:1 41:121 42:10 44:4 45:38 46:5 47:1 49:7 50:6 52:1 59:3 60:6 61:3 62:8 63:37 64:43 65:5 66:56 67:44 68:19 69:17 70:2 71:1 72:7 74:53 76:42 77:11 78:3 79:10 80:12 81:25 82:6 83:7 84:7 85:30 86:1 87:1 89:10 91:43 92:2 93:4 94:2 95:2 97:3 98:2 101:2 102:10 103:213 104:77 107:16 108:8 109:4 114:24 116:6 117:61 118:1 119:19 121:11 123:8 124:41 125:5 128:85 129:40 130:84 131:62 132:59 133:156 134:110 136:197 137:62 138:57 139:5 140:37 141:3 142:21 143:24 144:28 145:2 146:135 147:60 148:193 149:11 150:39 151:12 152:131 153:13 154:30 155:63 156:69 157:18 158:35 159:115 160:34 161:15 162:30 163:64 164:13 165:47 166:2 167:5 168:121 169:6 170:107 171:1 172:3 173:6 174:1 175:17 177:6 179:12 180:15 181:1 182:1 184:2 185:50 186:3 187:18 188:13 189:3 190:17 191:13 192:1498 193:260 194:122 195:64 196:154 197:119 198:483 199:284 200:250 201:36 202:580 203:390 204:375 205:132 206:190 207:157 208:76 209:120 210:173 211:13 212:168 213:5 214:8 216:92 217:10 218:22 219:5 220:17 222:2 223:4 End of report