IPv4 R&E Routing Table Report 17:05 GMT Mon 20 Jan, 2025 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: 13828 Prefixes after maximum aggregation (per Origin AS): 7903 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 8675 Number of IPv4 prefixes with a valid ROA: 5491 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 8336 Total ASes present in the Internet Routing Table: 2035 Prefixes per ASN: 6.80 Origin-only ASes present in the Internet Routing Table: 1765 Origin ASes announcing only one prefix: 840 Transit ASes present in the Internet Routing Table: 270 Transit-only ASes present in the Internet Routing Table: 43 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.6 Max AS path length visible: 17 Max AS path prepend of ASN (327947) 11 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: 46119 Number of 32-bit ASNs visible in the Routing Table: 492 Prefixes from 32-bit ASNs in the Routing Table: 1271 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: 2 Number of addresses announced to Internet: 159658592 Equivalent to 9 /8s, 132 /16s and 50 /24s Percentage of available address space announced: 4.3 Percentage of allocated address space announced: 4.3 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: 1715 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3247 Total APNIC prefixes after maximum aggregation: 1693 APNIC Deaggregation factor: 1.92 Prefixes being announced from the APNIC address blocks: 3247 Unique aggregates announced from the APNIC address blocks: 1876 APNIC Region origin ASes present in the Internet Routing Table: 418 APNIC Prefixes per ASN: 7.77 APNIC Region origin ASes announcing only one prefix: 200 APNIC Region transit ASes present in the Internet Routing Table: 39 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 169 Number of APNIC addresses announced to Internet: 37655936 Equivalent to 2 /8s, 62 /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, 131072-153913 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: 6149 Total ARIN prefixes after maximum aggregation: 3383 ARIN Deaggregation factor: 1.82 Prefixes being announced from the ARIN address blocks: 6163 Unique aggregates announced from the ARIN address blocks: 3785 ARIN Region origin ASes present in the Internet Routing Table: 883 ARIN Prefixes per ASN: 6.98 ARIN Region origin ASes announcing only one prefix: 323 ARIN Region transit ASes present in the Internet Routing Table: 110 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 137 Number of ARIN addresses announced to Internet: 63768608 Equivalent to 3 /8s, 205 /16s and 8 /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: 2944 Total RIPE prefixes after maximum aggregation: 2450 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2933 Unique aggregates announced from the RIPE address blocks: 2521 RIPE Region origin ASes present in the Internet Routing Table: 565 RIPE Prefixes per ASN: 5.19 RIPE Region origin ASes announcing only one prefix: 263 RIPE Region transit ASes present in the Internet Routing Table: 87 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: 54581120 Equivalent to 3 /8s, 64 /16s and 215 /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: 796 Total LACNIC prefixes after maximum aggregation: 331 LACNIC Deaggregation factor: 2.40 Prefixes being announced from the LACNIC address blocks: 792 Unique aggregates announced from the LACNIC address blocks: 427 LACNIC Region origin ASes present in the Internet Routing Table: 100 LACNIC Prefixes per ASN: 7.92 LACNIC Region origin ASes announcing only one prefix: 39 LACNIC Region transit ASes present in the Internet Routing Table: 16 Average LACNIC Region AS path length visible: 4.8 Max LACNIC Region AS path length visible: 8 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 38 Number of LACNIC addresses announced to Internet: 3056704 Equivalent to 0 /8s, 46 /16s and 164 /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: 692 Total AfriNIC prefixes after maximum aggregation: 46 AfriNIC Deaggregation factor: 15.04 Prefixes being announced from the AfriNIC address blocks: 691 Unique aggregates announced from the AfriNIC address blocks: 64 AfriNIC Region origin ASes present in the Internet Routing Table: 26 AfriNIC Prefixes per ASN: 26.58 AfriNIC Region origin ASes announcing only one prefix: 15 AfriNIC Region transit ASes present in the Internet Routing Table: 7 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 15 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 14 Number of AfriNIC addresses announced to Internet: 593920 Equivalent to 0 /8s, 9 /16s and 16 /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 637 2202 464 SINET-AS Research Organization of Informa 7497 450 180 24 CSTNET-AS-AP Computer Network Information 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 297 115 AARNET-AS-AP Australian Academic and Rese 55824 146 19 20 NKN-CORE-NW NKN Core Network, IN 4538 137 4192 70 ERX-CERNET-BKB China Education and Resear 2697 59 4 34 ERX-ERNET-AS Education and Research Netwo 45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Prov 132524 42 9 10 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 2152 499 507 97 CENIC-2152, US 2920 226 44 49 LACOE, US 376 200 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 23024 99 7 17 OCDE, US 21976 88 34 14 NJEDGE-NET, US 237 81 541 47 MERIT-AS-14, US 1736 79 16 1 MU-AS, US 81 78 220 36 NCREN, 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 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 186 1767 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 95 1487 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 2200 64 598 59 FR-RENATER Reseau National de telecommuni 200521 56 4 22 SEAP-AGE, ES 1653 51 150 48 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 213 178 44 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a 20191 28 16 1 Pontificia Universidad Catolica de Chile, 28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR 3597 18 16 2 Fundacion InnovaT, AR 28609 17 1 2 Instituto Nupef, BR 4270 16 1 10 Red de Interconexion Universitaria, AR 61468 16 3 7 CEDIA, EC 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 545 82 3 KENET-AS, KE 37182 36 8 1 TERNET, TZ 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 327700 11 16 1 MoRENet, MZ 37654 6 0 5 RwEdNet-AS, RW 327947 4 1 3 KNUST-, GH 327798 3 0 2 BERNET, BI 37496 2 0 1 Aga-Khan-University, TZ 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 637 2202 464 SINET-AS Research Organization of Informa 36914 545 82 3 KENET-AS, KE 2152 499 507 97 CENIC-2152, US 7497 450 180 24 CSTNET-AS-AP Computer Network Information 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 2920 226 44 49 LACOE, US 1916 213 178 44 Rede Nacional de Ensino e Pesquisa, BR 376 200 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 786 186 1767 183 JANET Jisc Services Limited, GB 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 545 542 KENET-AS, KE 7497 450 426 CSTNET-AS-AP Computer Network Information Cente 2152 499 402 CENIC-2152, US 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 226 177 LACOE, US 1916 213 169 Rede Nacional de Ensino e Pesquisa, BR 18558 140 135 NETBLK-RCOEK, US 55824 146 126 NKN-CORE-NW NKN Core Network, IN 23024 99 82 OCDE, 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 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 /11:0 /12:9 /13:16 /14:33 /15:96 /16:1566 /17:284 /18:304 /19:422 /20:575 /21:630 /22:1020 /23:1158 /24:7580 /25:34 /26:64 /27:35 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 521 545 KENET-AS, KE 1916 60 213 Rede Nacional de Ensino e Pesquisa, BR 2152 58 499 CENIC-2152, US 23024 38 99 OCDE, US 37182 35 36 TERNET, TZ 32440 33 56 LONI, US 200521 32 56 SEAP-AGE, ES 25977 28 42 HCCS, US 37215 26 32 MAREN, MW 26898 24 32 LNOCA-ORG, 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 14:93 23:3 24:2 31:1 35:3 37:8 38:3 41:253 42:7 44:3 45:28 46:4 47:1 49:11 59:8 60:6 61:2 62:5 63:2 64:20 65:3 66:20 67:32 68:3 69:9 70:2 72:7 74:19 76:32 77:3 78:3 79:10 80:6 81:24 82:3 83:6 84:6 85:25 87:1 89:10 91:38 93:13 94:2 95:2 96:5 98:2 102:3 103:229 104:75 108:2 109:1 111:17 114:1 116:6 118:17 119:23 121:27 122:8 123:8 124:42 125:1 128:31 129:28 130:93 131:53 132:16 133:155 134:74 136:196 137:84 138:58 139:4 140:25 141:3 142:18 143:12 144:21 145:2 146:122 147:21 148:9 149:13 150:39 151:3 152:106 153:6 154:17 155:41 156:134 157:9 158:25 159:115 160:32 161:12 162:16 163:58 164:9 165:8 167:7 168:27 169:6 170:27 172:2 173:7 175:4 177:4 179:4 180:16 182:2 184:5 185:39 186:2 187:4 188:12 189:3 190:2 191:3 192:1098 193:231 194:81 195:65 196:10 197:329 198:437 199:184 200:195 201:18 202:368 203:186 204:333 205:147 206:156 207:266 208:48 209:130 210:102 211:1 212:41 213:4 216:52 217:12 219:6 220:3 222:1 223:4 End of report