IPv4 R&E Routing Table Report 22:20 GMT Tue 17 Dec, 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: 19512 Prefixes after maximum aggregation (per Origin AS): 10914 Deaggregation factor: 1.79 Unique aggregates announced (without unneeded subnets): 12184 Number of IPv4 prefixes with a valid ROA: 7604 Number of IPv4 prefixes with an invalid ROA: 2 Number of IPv4 prefixes with no ROA: 11906 Total ASes present in the Internet Routing Table: 2800 Prefixes per ASN: 6.97 Origin-only ASes present in the Internet Routing Table: 2426 Origin ASes announcing only one prefix: 1087 Transit ASes present in the Internet Routing Table: 374 Transit-only ASes present in the Internet Routing Table: 68 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: 24 Max AS path prepend of ASN (138136) 20 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 45980 Number of 32-bit ASNs visible in the Routing Table: 684 Prefixes from 32-bit ASNs in the Routing Table: 1866 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: 3 Number of addresses announced to Internet: 172510720 Equivalent to 10 /8s, 72 /16s and 78 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 4.7 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: 2260 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4554 Total APNIC prefixes after maximum aggregation: 2229 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4557 Unique aggregates announced from the APNIC address blocks: 2621 APNIC Region origin ASes present in the Internet Routing Table: 551 APNIC Prefixes per ASN: 8.27 APNIC Region origin ASes announcing only one prefix: 235 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 3.7 Max APNIC Region AS path length visible: 24 Number of APNIC region 32-bit ASNs visible in the Routing Table: 205 Number of APNIC addresses announced to Internet: 35608320 Equivalent to 2 /8s, 31 /16s and 87 /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: 9127 Total ARIN prefixes after maximum aggregation: 5169 ARIN Deaggregation factor: 1.77 Prefixes being announced from the ARIN address blocks: 9117 Unique aggregates announced from the ARIN address blocks: 5749 ARIN Region origin ASes present in the Internet Routing Table: 1313 ARIN Prefixes per ASN: 6.94 ARIN Region origin ASes announcing only one prefix: 468 ARIN Region transit ASes present in the Internet Routing Table: 157 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: 226 Number of ARIN addresses announced to Internet: 76569600 Equivalent to 4 /8s, 144 /16s and 92 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 3514 Total RIPE prefixes after maximum aggregation: 2825 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3518 Unique aggregates announced from the RIPE address blocks: 2914 RIPE Region origin ASes present in the Internet Routing Table: 669 RIPE Prefixes per ASN: 5.26 RIPE Region origin ASes announcing only one prefix: 302 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 158 Number of RIPE addresses announced to Internet: 53806080 Equivalent to 3 /8s, 53 /16s and 4 /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, 53/8, 57/8, 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: 1348 Total LACNIC prefixes after maximum aggregation: 521 LACNIC Deaggregation factor: 2.59 Prefixes being announced from the LACNIC address blocks: 1349 Unique aggregates announced from the LACNIC address blocks: 682 LACNIC Region origin ASes present in the Internet Routing Table: 149 LACNIC Prefixes per ASN: 9.05 LACNIC Region origin ASes announcing only one prefix: 53 LACNIC Region transit ASes present in the Internet Routing Table: 21 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: 65 Number of LACNIC addresses announced to Internet: 4111616 Equivalent to 0 /8s, 62 /16s and 189 /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: 967 Total AfriNIC prefixes after maximum aggregation: 168 AfriNIC Deaggregation factor: 5.76 Prefixes being announced from the AfriNIC address blocks: 968 Unique aggregates announced from the AfriNIC address blocks: 215 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 20.17 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30 Number of AfriNIC addresses announced to Internet: 2412544 Equivalent to 0 /8s, 36 /16s and 208 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 592 2200 462 SINET-AS Research Organization of Informa 7497 445 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 313 113 AARNET-AS-AP Australian Academic and Rese 55824 146 19 20 NKN-CORE-NW NKN Core Network, IN 4538 120 2384 69 ERX-CERNET-BKB China Education and Resear 4621 69 37 10 UNINET-AS-AP UNINET-, TH 4762 64 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 2697 60 4 35 ERX-ERNET-AS Education and Research Netwo 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 2152 513 507 99 CENIC-2152, US 16509 253 44 172 AMAZON-02, US 2920 226 44 49 LACOE, US 668 202 630 171 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 141 18 5 NETBLK-RCOEK, US 81 133 469 34 NCREN, US 23024 97 7 19 OCDE, US 21976 89 50 15 NJEDGE-NET, 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 249 DFN Verein zur Foerderung eines Deutschen 786 185 1767 182 JANET Jisc Services Limited, GB 8895 132 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 94 1231 81 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 76 26 66 NIKS, 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 1916 158 178 41 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 110 25 53 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 53 5 18 CEDIA, EC 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 2715 44 99 33 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 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 378 319 71 TENET-1, ZA 36914 372 82 3 KENET-AS, KE 8094 47 48 18 PUKNET, ZA 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 16 16 1 MoRENet, MZ 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37074 8 8 2 UG-AS, GH 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 592 2200 462 SINET-AS Research Organization of Informa 2152 513 507 99 CENIC-2152, US 7497 445 180 24 CSTNET-AS-AP Computer Network Information 2018 378 319 71 TENET-1, ZA 36914 372 82 3 KENET-AS, KE 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 16509 253 44 172 AMAZON-02, US 2920 226 44 49 LACOE, US 668 202 630 171 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 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 445 421 CSTNET-AS-AP Computer Network Information Cente 2152 513 414 CENIC-2152, US 36914 372 369 KENET-AS, KE 2018 378 307 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 226 177 LACOE, US 18558 141 136 NETBLK-RCOEK, US 8895 132 127 ISU Internet Services Unit ISU, SA 55824 146 126 NKN-CORE-NW NKN Core Network, IN 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 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 22272 UNALLOCATED 206.208.24.0/21 6325 ILLINOIS-CENTURY, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U 202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 /14:33 /15:118 /16:1976 /17:426 /18:458 /19:583 /20:881 /21:928 /22:1538 /23:1668 /24:10903 /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 348 372 KENET-AS, KE 8895 127 132 ISU Internet Services Unit ISU, SA 16509 81 253 AMAZON-02, US 2152 62 513 CENIC-2152, US 23024 37 97 OCDE, US 32440 36 61 LONI, US 3267 34 76 NIKS, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 55 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 3:20 5:15 6:4 8:5 12:2 13:10 14:93 15:4 18:59 23:14 24:3 31:1 35:9 37:8 38:13 41:165 42:11 44:4 45:46 46:5 47:1 49:10 50:5 52:4 54:2 59:19 60:5 61:3 62:6 63:37 64:49 65:24 66:58 67:46 68:21 69:21 70:2 71:6 72:7 74:54 76:41 77:10 78:3 79:10 80:12 81:25 82:7 83:7 84:4 85:46 86:2 87:1 89:12 91:44 92:4 93:13 94:2 95:2 96:5 97:1 98:2 99:8 101:1 102:13 103:287 104:81 107:6 108:18 109:5 111:21 113:1 114:24 116:7 117:61 118:32 119:23 121:27 122:8 123:8 124:41 125:5 128:55 129:36 130:99 131:65 132:62 133:155 134:109 136:203 137:98 138:58 139:5 140:33 141:4 142:38 143:26 144:35 145:2 146:137 147:64 148:196 149:12 150:40 151:14 152:137 153:14 154:40 155:65 156:131 157:24 158:34 159:118 160:31 161:20 162:34 163:62 164:10 165:47 166:4 167:26 168:114 169:10 170:98 171:1 172:2 173:8 174:1 175:16 177:6 179:12 180:16 181:1 182:11 184:4 185:48 186:3 187:21 188:14 189:3 190:18 191:13 192:1419 193:263 194:119 195:67 196:144 197:216 198:543 199:286 200:262 201:36 202:634 203:434 204:413 205:179 206:216 207:307 208:72 209:164 210:218 211:3 212:164 213:6 214:8 216:105 217:9 218:22 219:6 220:16 222:2 223:4 End of report