IPv4 R&E Routing Table Report 17:05 GMT Tue 27 Aug, 2024 IPv4 BGP Table (R&E) as seen at ASREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 13293 Prefixes after maximum aggregation (per Origin AS): 7833 Deaggregation factor: 1.70 Unique aggregates announced (without unneeded subnets): 8678 Number of IPv4 prefixes with a valid ROA: 4531 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 8761 Total ASes present in the Internet Routing Table: 2018 Prefixes per ASN: 6.59 Origin-only ASes present in the Internet Routing Table: 1734 Origin ASes announcing only one prefix: 830 Transit ASes present in the Internet Routing Table: 284 Transit-only ASes present in the Internet Routing Table: 49 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 18 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 0 Number of instances of unregistered ASNs: 0 Number of 32-bit ASNs allocated by the RIRs: 45253 Number of 32-bit ASNs visible in the Routing Table: 497 Prefixes from 32-bit ASNs in the Routing Table: 1330 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: 162634176 Equivalent to 9 /8s, 177 /16s and 153 /24s Percentage of available address space announced: 4.4 Percentage of allocated address space announced: 4.4 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: 1555 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3303 Total APNIC prefixes after maximum aggregation: 1740 APNIC Deaggregation factor: 1.90 Prefixes being announced from the APNIC address blocks: 3302 Unique aggregates announced from the APNIC address blocks: 1907 APNIC Region origin ASes present in the Internet Routing Table: 426 APNIC Prefixes per ASN: 7.75 APNIC Region origin ASes announcing only one prefix: 199 APNIC Region transit ASes present in the Internet Routing Table: 44 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 173 Number of APNIC addresses announced to Internet: 37787200 Equivalent to 2 /8s, 64 /16s and 150 /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: 5562 Total ARIN prefixes after maximum aggregation: 3265 ARIN Deaggregation factor: 1.70 Prefixes being announced from the ARIN address blocks: 5573 Unique aggregates announced from the ARIN address blocks: 3701 ARIN Region origin ASes present in the Internet Routing Table: 846 ARIN Prefixes per ASN: 6.59 ARIN Region origin ASes announcing only one prefix: 311 ARIN Region transit ASes present in the Internet Routing Table: 113 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 140 Number of ARIN addresses announced to Internet: 63769440 Equivalent to 3 /8s, 205 /16s and 11 /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: 2907 Total RIPE prefixes after maximum aggregation: 2415 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2899 Unique aggregates announced from the RIPE address blocks: 2495 RIPE Region origin ASes present in the Internet Routing Table: 567 RIPE Prefixes per ASN: 5.11 RIPE Region origin ASes announcing only one prefix: 263 RIPE Region transit ASes present in the Internet Routing Table: 89 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: 134 Number of RIPE addresses announced to Internet: 56965248 Equivalent to 3 /8s, 101 /16s and 56 /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: 835 Total LACNIC prefixes after maximum aggregation: 365 LACNIC Deaggregation factor: 2.29 Prefixes being announced from the LACNIC address blocks: 831 Unique aggregates announced from the LACNIC address blocks: 509 LACNIC Region origin ASes present in the Internet Routing Table: 103 LACNIC Prefixes per ASN: 8.07 LACNIC Region origin ASes announcing only one prefix: 40 LACNIC Region transit ASes present in the Internet Routing Table: 20 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 37 Number of LACNIC addresses announced to Internet: 3412384 Equivalent to 0 /8s, 52 /16s and 17 /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: 686 Total AfriNIC prefixes after maximum aggregation: 48 AfriNIC Deaggregation factor: 14.29 Prefixes being announced from the AfriNIC address blocks: 685 Unique aggregates announced from the AfriNIC address blocks: 63 AfriNIC Region origin ASes present in the Internet Routing Table: 27 AfriNIC Prefixes per ASN: 25.37 AfriNIC Region origin ASes announcing only one prefix: 17 AfriNIC Region transit ASes present in the Internet Routing Table: 6 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 18 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 13 Number of AfriNIC addresses announced to Internet: 697344 Equivalent to 0 /8s, 10 /16s and 164 /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 593 2169 465 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 4538 188 4193 75 ERX-CERNET-BKB China Education and Resear 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 132 18 19 NKN-CORE-NW NKN Core Network, IN 2697 58 4 34 ERX-ERNET-AS Education and Research Netwo 45773 45 2 11 HECPERN-AS-PK PERN AS Content Servie Prov 132524 44 9 11 TIFR-AS Tata Institute of Fundamental Res 24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeast Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 5786 199 16 1 UPRENET, PR 376 196 162 148 RISQ-AS, CA 2920 175 34 7 LACOE, US 2152 150 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 270 129 332 91 AS270, US 23024 95 7 21 OCDE, US 21976 87 50 17 NJEDGE-NET, US 237 85 541 50 MERIT-AS-14, US 1736 79 16 1 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 97 2015 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 88 26 68 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 2200 63 598 58 FR-RENATER Reseau National de telecommuni 200521 55 4 21 SEAP-AGE, ES 1653 54 151 51 SUNET SUNET Swedish University Network, E Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 199 176 43 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 271640 66 4 27 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 44 99 33 Fundacao Carlos Chagas Filho de Amparo a 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 20191 28 16 1 Pontificia Universidad Catolica de Chile, 3597 19 16 2 Fundacion InnovaT, AR 28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR 27790 18 2 2 Universidad Nacional de Cordoba, AR 28609 17 1 2 Instituto Nupef, BR Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 523 82 3 KENET-AS, KE 327700 47 16 1 MoRENet, MZ 37182 38 8 1 TERNET, TZ 6879 24 2 9 ENSTINET-, EG 37661 13 8 5 NRaE1-AS, NG 37215 10 8 1 MAREN, MW 37654 6 1 6 RwEdNet-AS, RW 328903 4 0 1 RITER, CI 37532 2 20 2 ZAMREN, ZM 327945 2 0 2 ILRI, KE Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 593 2169 465 SINET-AS Research Organization of Informa 36914 523 82 3 KENET-AS, KE 7497 447 180 24 CSTNET-AS-AP Computer Network Information 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 1916 199 176 43 Rede Nacional de Ensino e Pesquisa, BR 5786 199 16 1 UPRENET, PR 376 196 162 148 RISQ-AS, CA 4538 188 4193 75 ERX-CERNET-BKB China Education and Resear 786 184 1767 181 JANET Jisc Services Limited, GB 58647 180 18 2 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 523 520 KENET-AS, KE 7497 447 423 CSTNET-AS-AP Computer Network Information Cente 5786 199 198 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 1916 199 156 Rede Nacional de Ensino e Pesquisa, BR 18558 140 136 NETBLK-RCOEK, US 4538 188 113 ERX-CERNET-BKB China Education and Research Net 55824 132 113 NKN-CORE-NW NKN Core Network, IN 1736 79 78 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet 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 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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/ASREN/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 /10:1 /11:1 /12:9 /13:17 /14:33 /15:97 /16:1577 /17:287 /18:296 /19:420 /20:579 /21:589 /22:969 /23:1066 /24:7244 /25:27 /26:48 /27:32 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 500 523 KENET-AS, KE 327700 41 47 MoRENet, MZ 1916 39 199 Rede Nacional de Ensino e Pesquisa, BR 23024 38 95 OCDE, US 37182 37 38 TERNET, TZ 200521 32 55 SEAP-AGE, ES 25977 27 39 HCCS, US 26898 24 32 LNOCA-ORG, US 31638 21 21 ASN-LEPIDA, IT 22742 19 66 CT-EDU-NET, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 8:2 12:1 14:92 23:2 24:3 31:1 35:3 37:8 38:3 41:263 42:13 44:4 45:26 46:5 49:8 50:1 58:17 59:9 60:6 61:2 62:5 63:3 64:23 65:1 66:15 67:33 68:1 69:9 70:2 72:7 74:19 76:2 77:3 78:3 79:10 80:7 81:23 82:2 83:6 84:6 85:12 87:1 89:11 91:37 93:13 94:1 95:2 96:5 101:4 102:5 103:229 104:64 108:2 109:1 111:15 114:1 116:6 118:19 119:23 121:27 122:8 123:8 124:42 128:60 129:22 130:82 131:49 132:21 133:154 134:75 136:197 137:38 138:57 139:5 140:17 141:3 142:16 143:15 144:23 145:2 146:120 147:19 148:8 149:13 150:12 151:3 152:106 153:7 154:13 155:26 156:134 157:8 158:30 159:116 160:30 161:11 162:12 163:56 164:14 165:8 167:9 168:28 169:6 170:12 172:1 173:5 175:6 177:3 179:10 180:15 182:1 184:5 185:41 186:2 187:3 188:11 189:3 190:1 191:2 192:1142 193:224 194:84 195:60 196:9 197:312 198:336 199:184 200:231 201:19 202:376 203:203 204:320 205:95 206:145 207:201 208:45 209:84 210:99 211:2 212:40 213:3 216:48 217:9 219:5 220:4 222:2 223:15 End of report