IPv4 R&E Routing Table Report 22:20 GMT Tue 15 Oct, 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: 18782 Prefixes after maximum aggregation (per Origin AS): 10599 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 11716 Number of IPv4 prefixes with a valid ROA: 6928 Number of IPv4 prefixes with an invalid ROA: 4 Number of IPv4 prefixes with no ROA: 11850 Total ASes present in the Internet Routing Table: 2721 Prefixes per ASN: 6.90 Origin-only ASes present in the Internet Routing Table: 2365 Origin ASes announcing only one prefix: 1051 Transit ASes present in the Internet Routing Table: 356 Transit-only ASes present in the Internet Routing Table: 55 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: 19 Max AS path prepend of ASN (395156) 12 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: 45545 Number of 32-bit ASNs visible in the Routing Table: 653 Prefixes from 32-bit ASNs in the Routing Table: 1811 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: 175461376 Equivalent to 10 /8s, 117 /16s and 84 /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: 2246 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4197 Total APNIC prefixes after maximum aggregation: 2126 APNIC Deaggregation factor: 1.97 Prefixes being announced from the APNIC address blocks: 4196 Unique aggregates announced from the APNIC address blocks: 2395 APNIC Region origin ASes present in the Internet Routing Table: 501 APNIC Prefixes per ASN: 8.38 APNIC Region origin ASes announcing only one prefix: 217 APNIC Region transit ASes present in the Internet Routing Table: 48 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 190 Number of APNIC addresses announced to Internet: 35566592 Equivalent to 2 /8s, 30 /16s and 180 /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: 8481 Total ARIN prefixes after maximum aggregation: 4954 ARIN Deaggregation factor: 1.71 Prefixes being announced from the ARIN address blocks: 8494 Unique aggregates announced from the ARIN address blocks: 5508 ARIN Region origin ASes present in the Internet Routing Table: 1299 ARIN Prefixes per ASN: 6.54 ARIN Region origin ASes announcing only one prefix: 456 ARIN Region transit ASes present in the Internet Routing Table: 159 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 217 Number of ARIN addresses announced to Internet: 79448064 Equivalent to 4 /8s, 188 /16s and 72 /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, 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: 3512 Total RIPE prefixes after maximum aggregation: 2821 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3503 Unique aggregates announced from the RIPE address blocks: 2897 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.28 RIPE Region origin ASes announcing only one prefix: 295 RIPE Region transit ASes present in the Internet Routing Table: 99 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: 153 Number of RIPE addresses announced to Internet: 53897216 Equivalent to 3 /8s, 54 /16s and 104 /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: 1425 Total LACNIC prefixes after maximum aggregation: 527 LACNIC Deaggregation factor: 2.70 Prefixes being announced from the LACNIC address blocks: 1422 Unique aggregates announced from the LACNIC address blocks: 700 LACNIC Region origin ASes present in the Internet Routing Table: 153 LACNIC Prefixes per ASN: 9.29 LACNIC Region origin ASes announcing only one prefix: 54 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: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 67 Number of LACNIC addresses announced to Internet: 4071424 Equivalent to 0 /8s, 62 /16s and 32 /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: 1165 Total AfriNIC prefixes after maximum aggregation: 169 AfriNIC Deaggregation factor: 6.89 Prefixes being announced from the AfriNIC address blocks: 1164 Unique aggregates announced from the AfriNIC address blocks: 213 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 24.25 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.5 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2475520 Equivalent to 0 /8s, 37 /16s and 198 /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 2170 464 SINET-AS Research Organization of Informa 7497 451 212 25 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 329 113 AARNET-AS-AP Australian Academic and Rese 55824 132 18 19 NKN-CORE-NW NKN Core Network, IN 4538 111 2384 69 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 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 668 204 648 173 DNIC-AS-00668, US 376 200 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 270 160 345 86 AS270, US 2152 149 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 81 133 469 34 NCREN, US 23024 95 7 21 OCDE, US 237 89 542 54 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 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 786 185 1767 182 JANET Jisc Services Limited, GB 8895 131 24 4 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 95 1247 82 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 210 180 42 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 49 5 16 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 3596 37 8 4 Universidad Autonoma Metropolitana, MX 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 36914 531 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 46 16 1 MoRENet, MZ 37215 33 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37074 15 8 2 UG-AS, GH 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 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 2170 464 SINET-AS Research Organization of Informa 36914 531 82 3 KENET-AS, KE 7497 451 212 25 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 1916 210 180 42 Rede Nacional de Ensino e Pesquisa, BR 668 204 648 173 DNIC-AS-00668, US 376 200 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 191 74 145 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 36914 531 528 KENET-AS, KE 7497 451 426 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 1916 210 168 Rede Nacional de Ensino e Pesquisa, BR 2920 175 168 LACOE, US 18558 140 136 NETBLK-RCOEK, US 8895 131 127 ISU Internet Services Unit ISU, SA 55824 132 113 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 /14:35 /15:119 /16:2013 /17:426 /18:453 /19:582 /20:863 /21:897 /22:1443 /23:1539 /24:10412 /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 510 531 KENET-AS, KE 8895 126 131 ISU Internet Services Unit ISU, SA 327700 40 46 MoRENet, MZ 23024 37 95 OCDE, US 32440 37 64 LONI, US 3267 35 76 NIKS, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 31 54 SEAP-AGE, ES 25977 30 44 HCCS, 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 14:92 18:43 23:9 24:3 31:1 35:9 37:8 38:11 40:1 41:250 42:10 44:5 45:42 46:4 47:1 49:5 50:4 52:1 59:3 60:6 61:3 62:7 63:37 64:44 65:15 66:50 67:44 68:20 69:18 70:2 71:1 72:7 74:54 76:41 77:10 78:3 79:10 80:12 81:25 82:7 83:7 84:5 85:45 86:2 87:1 89:11 91:42 92:2 93:12 94:2 95:2 96:5 97:1 98:2 101:1 102:10 103:223 104:77 107:2 108:6 109:4 113:2 114:24 116:7 117:61 118:1 119:24 121:11 123:8 124:42 125:5 128:52 129:36 130:96 131:60 132:65 133:154 134:109 136:197 137:53 138:58 139:6 140:33 141:3 142:52 143:26 144:27 145:2 146:136 147:56 148:195 149:13 150:37 151:11 152:134 153:13 154:38 155:59 156:138 157:24 158:31 159:121 160:30 161:14 162:32 163:61 164:13 165:49 166:2 167:13 168:120 169:7 170:96 171:1 172:2 173:6 174:1 175:4 177:6 179:13 180:15 181:1 182:1 184:8 185:52 186:3 187:20 188:13 189:3 190:18 191:13 192:1495 193:261 194:123 195:66 196:148 197:323 198:479 199:285 200:322 201:36 202:582 203:410 204:388 205:137 206:209 207:227 208:67 209:112 210:198 211:3 212:164 213:6 214:8 216:60 217:9 218:21 219:5 220:17 222:2 223:4 End of report