IPv4 R&E Routing Table Report 17:05 GMT Sun 26 Feb, 2023 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: 13498 Prefixes after maximum aggregation (per Origin AS): 8235 Deaggregation factor: 1.64 Unique aggregates announced (without unneeded subnets): 9131 Number of IPv4 prefixes with a valid ROA: 3375 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 10123 Total ASes present in the Internet Routing Table: 2127 Prefixes per ASN: 6.35 Origin-only ASes present in the Internet Routing Table: 1844 Origin ASes announcing only one prefix: 848 Transit ASes present in the Internet Routing Table: 283 Transit-only ASes present in the Internet Routing Table: 44 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 14 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 3 Number of instances of unregistered ASNs: 3 Number of 32-bit ASNs allocated by the RIRs: 41307 Number of 32-bit ASNs visible in the Routing Table: 492 Prefixes from 32-bit ASNs in the Routing Table: 1338 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: 1 Number of addresses announced to Internet: 169738496 Equivalent to 10 /8s, 30 /16s and 1 /24s Percentage of available address space announced: 4.6 Percentage of allocated address space announced: 4.6 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: 1277 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3487 Total APNIC prefixes after maximum aggregation: 1795 APNIC Deaggregation factor: 1.94 Prefixes being announced from the APNIC address blocks: 3488 Unique aggregates announced from the APNIC address blocks: 1974 APNIC Region origin ASes present in the Internet Routing Table: 446 APNIC Prefixes per ASN: 7.82 APNIC Region origin ASes announcing only one prefix: 203 APNIC Region transit ASes present in the Internet Routing Table: 49 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 179 Number of APNIC addresses announced to Internet: 38310240 Equivalent to 2 /8s, 72 /16s and 145 /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, 131072-151865 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: 6134 Total ARIN prefixes after maximum aggregation: 3607 ARIN Deaggregation factor: 1.70 Prefixes being announced from the ARIN address blocks: 6146 Unique aggregates announced from the ARIN address blocks: 4084 ARIN Region origin ASes present in the Internet Routing Table: 944 ARIN Prefixes per ASN: 6.51 ARIN Region origin ASes announcing only one prefix: 323 ARIN Region transit ASes present in the Internet Routing Table: 116 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: 135 Number of ARIN addresses announced to Internet: 73796096 Equivalent to 4 /8s, 102 /16s and 10 /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: 2902 Total RIPE prefixes after maximum aggregation: 2443 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 2895 Unique aggregates announced from the RIPE address blocks: 2524 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: 261 RIPE Region transit ASes present in the Internet Routing Table: 83 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 127 Number of RIPE addresses announced to Internet: 55217024 Equivalent to 3 /8s, 74 /16s and 139 /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 196608-213403 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: 626 Total LACNIC prefixes after maximum aggregation: 317 LACNIC Deaggregation factor: 1.97 Prefixes being announced from the LACNIC address blocks: 622 Unique aggregates announced from the LACNIC address blocks: 451 LACNIC Region origin ASes present in the Internet Routing Table: 83 LACNIC Prefixes per ASN: 7.49 LACNIC Region origin ASes announcing only one prefix: 42 LACNIC Region transit ASes present in the Internet Routing Table: 19 Average LACNIC Region AS path length visible: 4.8 Max LACNIC Region AS path length visible: 9 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 29 Number of LACNIC addresses announced to Internet: 1541152 Equivalent to 0 /8s, 23 /16s and 132 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 346 Total AfriNIC prefixes after maximum aggregation: 70 AfriNIC Deaggregation factor: 4.94 Prefixes being announced from the AfriNIC address blocks: 346 Unique aggregates announced from the AfriNIC address blocks: 97 AfriNIC Region origin ASes present in the Internet Routing Table: 40 AfriNIC Prefixes per ASN: 8.65 AfriNIC Region origin ASes announcing only one prefix: 19 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 22 Number of AfriNIC addresses announced to Internet: 873728 Equivalent to 0 /8s, 13 /16s and 85 /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 2157 464 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 4538 191 4192 73 ERX-CERNET-BKB China Education and Rese 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 55824 118 18 11 NKN-CORE-NW NKN Core Network, IN 4621 65 6 46 UNINET-AS-AP UNINET-, TH 2697 55 3 33 ERX-ERNET-AS Education and Research Net 45773 47 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 9903 46 3 3 RIT-AS-AP Rajamangala Institute of Tech 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 376 198 178 147 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2152 152 507 91 CSUNET-NW, US 18558 134 18 4 NETBLK-RCOEK, US 270 120 329 85 AS270, US 23024 112 7 19 OCDE, US 2920 109 34 7 LACOE, US 32440 92 18 17 LONI, US 32531 90 6 60 FORDHAM-UNIVERSITY, US 21976 85 51 18 NJEDGE-NET, 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 680 282 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 559 115 550 106 SWITCH Peering requests: peering@switch 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 1653 50 151 47 SUNET SUNET Swedish University Network, 200521 49 4 20 SEAP-AGE, ES 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 125 60 64 Rede Nacional de Ensino e Pesquisa, BR 11340 104 24 47 Red Universitaria Nacional, CL 1251 58 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 263683 32 10 20 Universidad de Costa Rica, CR 28571 31 38 13 UNIVERSIDADE DE SAO PAULO, BR 3597 23 2 17 Fundacion InnovaT, AR 27790 18 2 2 Universidad Nacional de Cordoba, AR 52888 18 7 9 UNIVERSIDADE FEDERAL DE SAO CARLOS, BR 28609 16 1 1 Instituto Nupef, BR 28027 13 2 6 Escuela Superior Politecnica del Litora 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 84 82 3 KENET-AS, KE 327687 60 28 3 RENU, UG 327700 33 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 37182 32 8 1 TERNET, TZ 6879 24 2 9 ENSTINET-, EG 37074 10 7 7 UG-AS, GH 37654 10 1 6 RwEdNet-AS, RW 2561 7 0 5 EUN, EG 328358 5 1 1 Makerere-AS, UG 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 590 2157 464 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 680 282 1919 249 DFN Verein zur Foerderung eines Deutsch 376 198 178 147 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 4538 191 4192 73 ERX-CERNET-BKB China Education and Rese 786 186 1775 183 JANET Jisc Services Limited, GB 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 2152 152 507 91 CSUNET-NW, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 435 411 CSTNET-AS-AP Computer Network Information Cente 5786 198 197 UPRENET, PR 58647 177 175 KAGAWAU-AS Kagawa University, JP 18558 134 130 NETBLK-RCOEK, US 4538 191 118 ERX-CERNET-BKB China Education and Research Net 55824 118 107 NKN-CORE-NW NKN Core Network, IN 2920 109 102 LACOE, US 23024 112 93 OCDE, US 36914 84 81 KENET-AS, KE 1736 80 79 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 18621 UNALLOCATED 142.156.0.0/16 26677 ORION-ASN, CA 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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 /10:2 /11:0 /12:9 /13:17 /14:33 /15:102 /16:1653 /17:294 /18:306 /19:413 /20:590 /21:627 /22:1041 /23:1142 /24:7108 /25:42 /26:48 /27:70 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 32440 77 92 LONI, US 36914 75 84 KENET-AS, KE 23024 52 112 OCDE, US 37182 31 32 TERNET, TZ 200521 28 49 SEAP-AGE, ES 327700 28 33 MoRENet, MZ 25977 27 30 HCCS, US 36794 24 26 SCOCA, US 1916 22 125 Rede Nacional de Ensino e Pesquisa, BR 31638 21 21 ASN-LEPIDA, IT 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 14:89 23:4 24:3 31:3 35:6 38:6 41:130 42:11 44:4 45:24 46:5 49:6 58:12 59:9 60:4 61:2 62:6 63:3 64:29 65:1 66:5 67:34 68:1 69:11 70:2 71:1 72:7 74:16 76:38 77:4 78:3 79:10 80:8 81:27 82:1 83:6 84:5 85:24 87:1 89:10 91:35 93:4 94:2 95:2 96:5 101:4 102:12 103:215 104:70 108:6 109:3 110:2 111:16 114:1 116:6 118:18 119:21 121:28 122:8 123:8 124:39 125:1 128:62 129:28 130:85 131:54 132:46 133:149 134:67 136:197 137:83 138:9 139:5 140:30 141:1 142:39 143:17 144:23 145:2 146:93 147:20 148:7 149:12 150:99 151:9 152:25 153:6 154:6 155:40 156:67 157:20 158:33 159:114 160:27 161:16 162:15 163:72 164:7 165:11 167:11 168:57 169:8 170:18 172:2 173:7 175:25 177:7 179:8 180:16 182:1 185:31 186:2 187:3 188:12 189:3 190:6 191:1 192:1214 193:269 194:93 195:57 196:26 197:3 198:356 199:202 200:169 201:21 202:463 203:260 204:301 205:107 206:146 207:122 208:59 209:105 210:89 211:1 212:42 213:2 216:53 217:10 219:11 220:5 222:3 223:9 End of report