IPv4 R&E Routing Table Report 17:05 GMT Fri 04 Feb, 2022 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: 15419 Prefixes after maximum aggregation (per Origin AS): 9057 Deaggregation factor: 1.70 Unique aggregates announced (without unneeded subnets): 9909 Number of IPv4 prefixes with a valid ROA: 3362 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 12057 Total ASes present in the Internet Routing Table: 2357 Prefixes per ASN: 6.54 Origin-only ASes present in the Internet Routing Table: 2052 Origin ASes announcing only one prefix: 961 Transit ASes present in the Internet Routing Table: 305 Transit-only ASes present in the Internet Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 14 Max AS path prepend of ASN ( 5474) 11 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: 38490 Number of 32-bit ASNs visible in the Routing Table: 531 Prefixes from 32-bit ASNs in the Routing Table: 1495 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 1 Number of addresses announced to Internet: 186987552 Equivalent to 11 /8s, 37 /16s and 52 /24s Percentage of available address space announced: 5.1 Percentage of allocated address space announced: 5.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 1751 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3742 Total APNIC prefixes after maximum aggregation: 2008 APNIC Deaggregation factor: 1.86 Prefixes being announced from the APNIC address blocks: 3743 Unique aggregates announced from the APNIC address blocks: 2196 APNIC Region origin ASes present in the Internet Routing Table: 455 APNIC Prefixes per ASN: 8.23 APNIC Region origin ASes announcing only one prefix: 197 APNIC Region transit ASes present in the Internet Routing Table: 51 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 173 Number of APNIC addresses announced to Internet: 44343360 Equivalent to 2 /8s, 164 /16s and 160 /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: 6403 Total ARIN prefixes after maximum aggregation: 3818 ARIN Deaggregation factor: 1.68 Prefixes being announced from the ARIN address blocks: 6414 Unique aggregates announced from the ARIN address blocks: 4262 ARIN Region origin ASes present in the Internet Routing Table: 1014 ARIN Prefixes per ASN: 6.33 ARIN Region origin ASes announcing only one prefix: 366 ARIN Region transit ASes present in the Internet Routing Table: 118 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: 136 Number of ARIN addresses announced to Internet: 80096064 Equivalent to 4 /8s, 198 /16s and 43 /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: 3267 Total RIPE prefixes after maximum aggregation: 2585 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3259 Unique aggregates announced from the RIPE address blocks: 2643 RIPE Region origin ASes present in the Internet Routing Table: 647 RIPE Prefixes per ASN: 5.04 RIPE Region origin ASes announcing only one prefix: 309 RIPE Region transit ASes present in the Internet Routing Table: 97 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 132 Number of RIPE addresses announced to Internet: 55978944 Equivalent to 3 /8s, 86 /16s and 43 /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: 1176 Total LACNIC prefixes after maximum aggregation: 478 LACNIC Deaggregation factor: 2.46 Prefixes being announced from the LACNIC address blocks: 1174 Unique aggregates announced from the LACNIC address blocks: 573 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 7.48 LACNIC Region origin ASes announcing only one prefix: 67 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 5.1 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: 3851232 Equivalent to 0 /8s, 58 /16s and 195 /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: 828 Total AfriNIC prefixes after maximum aggregation: 165 AfriNIC Deaggregation factor: 5.02 Prefixes being announced from the AfriNIC address blocks: 828 Unique aggregates announced from the AfriNIC address blocks: 234 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 16.56 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.6 Max AfriNIC Region AS path length visible: 7 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2717696 Equivalent to 0 /8s, 41 /16s and 120 /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 577 2157 458 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 186 74 135 KREONET-AS-KR KISTI, KR 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 4538 176 4192 72 ERX-CERNET-BKB China Education and Rese 7575 175 330 122 AARNET-AS-AP Australian Academic and Re 55824 129 19 22 NKN-CORE-NW NKN Core Network, IN 2697 53 3 32 ERX-ERNET-AS Education and Research Net 1659 51 1434 33 ERX-TANET-ASN1 Taiwan Academic Network 132524 49 9 11 TIFR-AS Tata Institute of Fundamental R 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 200 16 1 UPRENET, PR 376 199 178 149 RISQ-AS, CA 2152 144 507 86 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 270 119 329 88 AS270, US 2920 111 34 6 LACOE, US 21976 85 51 18 NJEDGE-NET, US 1736 80 16 1 MU-AS, US 3477 74 71 43 NOAA-NWAVE, US 22742 69 53 34 CT-EDU-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 680 279 1950 245 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 183 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 2200 67 647 61 FR-RENATER Reseau National de telecommu 2614 58 32 55 ROEDUNET, RO 1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol 1653 52 167 49 SUNET SUNET Swedish University Network, 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 200 207 42 Rede Nacional de Ensino e Pesquisa, BR 11340 95 24 55 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 45 17 2 Associacao Antonio Vieira - Unisinos, B 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28571 36 26 15 UNIVERSIDADE DE SAO PAULO, BR 20191 31 16 1 Pontificia Universidad Catolica de Chil 271640 27 8 1 UNIVERSIDADE FEDERAL DE VICOSA, 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 2018 351 319 74 TENET-1, ZA 36914 202 82 3 KENET-AS, KE 8094 50 48 4 PUKNET, ZA 327687 37 28 3 RENU, UG 327700 34 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 12 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA 37074 10 7 7 UG-AS, GH 36982 8 33 8 UCT, ZA 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 577 2157 458 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 351 319 74 TENET-1, ZA 680 279 1950 245 DFN Verein zur Foerderung eines Deutsch 36914 202 82 3 KENET-AS, KE 1916 200 207 42 Rede Nacional de Ensino e Pesquisa, BR 5786 200 16 1 UPRENET, PR 376 199 178 149 RISQ-AS, CA 786 186 1774 183 JANET Jisc Services Limited, GB 1237 186 74 135 KREONET-AS-KR KISTI, KR 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 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 351 277 TENET-1, ZA 36914 202 199 KENET-AS, KE 5786 200 199 UPRENET, PR 8895 183 179 ISU Internet Services Unit ISU, SA 58647 177 175 KAGAWAU-AS Kagawa University, JP 1916 200 158 Rede Nacional de Ensino e Pesquisa, BR 18558 136 132 NETBLK-RCOEK, US 55824 129 107 NKN-CORE-NW NKN Core Network, IN 2920 111 105 LACOE, 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 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/ASREN/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, 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 /11:1 /12:10 /13:18 /14:34 /15:108 /16:1802 /17:345 /18:355 /19:494 /20:718 /21:792 /22:1231 /23:1314 /24:8010 /25:72 /26:54 /27:58 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 189 202 KENET-AS, KE 8895 178 183 ISU Internet Services Unit ISU, SA 23024 53 56 OCDE, US 327700 30 34 MoRENet, MZ 25977 29 43 HCCS, US 32440 29 44 LONI, US 200521 29 48 SEAP-AGE, ES 1916 26 200 Rede Nacional de Ensino e Pesquisa, BR 31638 21 21 ASN-LEPIDA, IT 2614 20 58 ROEDUNET, RO Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 8:1 12:1 14:85 23:3 24:2 31:1 37:6 38:6 40:1 41:116 42:10 44:4 45:30 46:6 49:10 58:7 59:8 60:4 61:2 62:6 63:3 64:26 66:13 67:40 68:1 69:18 71:1 72:10 74:18 76:33 77:7 78:3 79:10 80:15 81:27 82:2 83:6 84:3 85:31 86:7 87:1 88:1 89:10 91:46 92:1 93:18 94:2 95:5 96:5 101:4 102:12 103:229 104:8 106:1 108:8 109:10 110:3 111:16 112:4 114:6 116:5 118:17 119:22 121:27 122:8 123:8 124:39 125:1 128:63 129:34 130:90 131:83 132:53 133:139 134:89 136:191 137:85 138:8 139:4 140:34 141:2 142:41 143:33 144:25 145:2 146:125 147:28 148:7 149:13 150:36 151:6 152:71 153:6 154:25 155:51 156:67 157:26 158:39 159:115 160:25 161:18 162:16 163:60 164:40 165:17 166:2 167:16 168:101 169:10 170:46 172:2 173:2 175:19 176:8 177:12 178:1 179:8 180:16 182:6 184:4 185:38 186:3 187:2 188:13 189:5 190:46 191:16 192:1274 193:182 194:109 195:56 196:150 197:115 198:400 199:212 200:233 201:24 202:355 203:282 204:302 205:147 206:155 207:142 208:56 209:99 210:178 211:1 212:173 213:5 216:56 217:15 218:5 219:11 220:5 222:5 223:3 End of report