IPv4 R&E Routing Table Report 17:05 GMT Tue 24 Jan, 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: 13417 Prefixes after maximum aggregation (per Origin AS): 8195 Deaggregation factor: 1.64 Unique aggregates announced (without unneeded subnets): 9021 Number of IPv4 prefixes with a valid ROA: 3422 Number of IPv4 prefixes with an invalid ROA: 80 Number of IPv4 prefixes with no ROA: 9915 Total ASes present in the Internet Routing Table: 2110 Prefixes per ASN: 6.36 Origin-only ASes present in the Internet Routing Table: 1833 Origin ASes announcing only one prefix: 829 Transit ASes present in the Internet Routing Table: 277 Transit-only ASes present in the Internet Routing Table: 41 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: 14 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 41111 Number of 32-bit ASNs visible in the Routing Table: 470 Prefixes from 32-bit ASNs in the Routing Table: 1270 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: 171448672 Equivalent to 10 /8s, 56 /16s and 25 /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: 1415 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3263 Total APNIC prefixes after maximum aggregation: 1707 APNIC Deaggregation factor: 1.91 Prefixes being announced from the APNIC address blocks: 3264 Unique aggregates announced from the APNIC address blocks: 1862 APNIC Region origin ASes present in the Internet Routing Table: 424 APNIC Prefixes per ASN: 7.70 APNIC Region origin ASes announcing only one prefix: 191 APNIC Region transit ASes present in the Internet Routing Table: 48 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 166 Number of APNIC addresses announced to Internet: 38087264 Equivalent to 2 /8s, 69 /16s and 42 /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: 6284 Total ARIN prefixes after maximum aggregation: 3709 ARIN Deaggregation factor: 1.69 Prefixes being announced from the ARIN address blocks: 6300 Unique aggregates announced from the ARIN address blocks: 4197 ARIN Region origin ASes present in the Internet Routing Table: 981 ARIN Prefixes per ASN: 6.42 ARIN Region origin ASes announcing only one prefix: 338 ARIN Region transit ASes present in the Internet Routing Table: 115 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: 142 Number of ARIN addresses announced to Internet: 76585600 Equivalent to 4 /8s, 144 /16s and 154 /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: 2913 Total RIPE prefixes after maximum aggregation: 2451 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 2903 Unique aggregates announced from the RIPE address blocks: 2532 RIPE Region origin ASes present in the Internet Routing Table: 563 RIPE Prefixes per ASN: 5.16 RIPE Region origin ASes announcing only one prefix: 257 RIPE Region transit ASes present in the Internet Routing Table: 82 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: 125 Number of RIPE addresses announced to Internet: 55219328 Equivalent to 3 /8s, 74 /16s and 148 /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: 486 Total LACNIC prefixes after maximum aggregation: 273 LACNIC Deaggregation factor: 1.78 Prefixes being announced from the LACNIC address blocks: 482 Unique aggregates announced from the LACNIC address blocks: 354 LACNIC Region origin ASes present in the Internet Routing Table: 68 LACNIC Prefixes per ASN: 7.09 LACNIC Region origin ASes announcing only one prefix: 30 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: 24 Number of LACNIC addresses announced to Internet: 757248 Equivalent to 0 /8s, 11 /16s and 142 /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: 467 Total AfriNIC prefixes after maximum aggregation: 51 AfriNIC Deaggregation factor: 9.16 Prefixes being announced from the AfriNIC address blocks: 467 Unique aggregates announced from the AfriNIC address blocks: 75 AfriNIC Region origin ASes present in the Internet Routing Table: 29 AfriNIC Prefixes per ASN: 16.10 AfriNIC Region origin ASes announcing only one prefix: 13 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 13 Number of AfriNIC addresses announced to Internet: 798976 Equivalent to 0 /8s, 12 /16s and 49 /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 587 2149 461 SINET-AS Research Organization of Infor 7497 431 180 21 CSTNET-AS-AP Computer Network Informati 4538 188 4192 73 ERX-CERNET-BKB China Education and Rese 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 329 119 AARNET-AS-AP Australian Academic and Re 55824 119 18 12 NKN-CORE-NW NKN Core Network, IN 2697 54 3 32 ERX-ERNET-AS Education and Research Net 45773 47 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 132524 44 9 11 TIFR-AS Tata Institute of Fundamental R 9270 33 5 6 APAN-KR-AS National Infomation Society 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 376 197 177 146 RISQ-AS, CA 2152 151 507 90 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 16 LONI, US 32531 90 6 60 FORDHAM-UNIVERSITY, US 21976 87 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 250 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 559 114 550 105 SWITCH Peering requests: peering@switch 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 95 27 75 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 200521 53 4 20 SEAP-AGE, ES 1653 50 151 47 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 11340 97 24 55 Red Universitaria Nacional, CL 1251 58 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 1916 46 10 28 Rede Nacional de Ensino e Pesquisa, BR 263683 32 10 20 Universidad de Costa Rica, CR 20191 28 16 1 Pontificia Universidad Catolica de Chil 3597 23 2 17 Fundacion InnovaT, AR 28571 21 16 12 UNIVERSIDADE DE SAO PAULO, BR 27790 18 2 2 Universidad Nacional de Cordoba, AR 27817 16 2 6 Red Nacional Academica de Tecnologia Av 52888 15 7 9 UNIVERSIDADE FEDERAL DE SAO CARLOS, 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 244 82 3 KENET-AS, KE 327687 44 28 3 RENU, UG 3208 32 2 1 ARN, DZ 37182 31 8 1 TERNET, TZ 327700 31 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37654 10 1 6 RwEdNet-AS, RW 2561 7 0 5 EUN, EG 31960 5 1 1 EMUNET, MZ 37215 5 8 1 MAREN, MW 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 587 2149 461 SINET-AS Research Organization of Infor 7497 431 180 21 CSTNET-AS-AP Computer Network Informati 680 282 1919 250 DFN Verein zur Foerderung eines Deutsch 36914 244 82 3 KENET-AS, KE 5786 199 16 1 UPRENET, PR 376 197 177 146 RISQ-AS, CA 4538 188 4192 73 ERX-CERNET-BKB China Education and Rese 786 186 1775 183 JANET Jisc Services Limited, GB 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 329 119 AARNET-AS-AP Australian Academic and Re 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 431 410 CSTNET-AS-AP Computer Network Information Cente 36914 244 241 KENET-AS, KE 5786 199 198 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 18558 134 130 NETBLK-RCOEK, US 4538 188 115 ERX-CERNET-BKB China Education and Research Net 55824 119 107 NKN-CORE-NW NKN Core Network, IN 2920 109 102 LACOE, US 23024 112 93 OCDE, US 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 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, 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 /15:104 /16:1671 /17:289 /18:309 /19:416 /20:574 /21:624 /22:1004 /23:1142 /24:7064 /25:45 /26:52 /27:61 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 231 244 KENET-AS, KE 32440 77 92 LONI, US 23024 52 112 OCDE, US 37182 30 31 TERNET, TZ 200521 30 53 SEAP-AGE, ES 25977 28 42 HCCS, US 327700 28 31 MoRENet, MZ 36794 24 26 SCOCA, US 31638 21 21 ASN-LEPIDA, IT 1916 20 46 Rede Nacional de Ensino e Pesquisa, BR 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 23:3 24:3 31:3 35:6 38:6 41:137 42:11 44:4 45:19 46:5 49:10 50:1 58:12 59:8 60:4 61:2 62:6 63:4 64:28 65:1 66:5 67:35 68:1 69:12 70:2 71:1 72:7 74:17 76:37 77:4 78:3 79:10 80:8 81:27 82:1 83:6 84:6 85:24 86:3 87:1 89:10 91:35 93:4 94:2 95:4 96:5 101:4 102:10 103:223 104:68 108:6 109:3 110:2 111:16 114:1 116:6 118:18 119:22 121:27 122:8 123:8 124:39 125:1 128:67 129:30 130:86 131:56 132:53 133:149 134:68 136:198 137:59 138:9 139:5 140:34 141:1 142:39 143:17 144:23 145:2 146:115 147:24 148:7 149:12 150:99 151:7 152:22 153:6 154:6 155:40 156:67 157:20 158:37 159:115 160:26 161:16 162:15 163:72 164:9 165:11 167:11 168:56 169:9 170:16 172:2 173:7 175:27 177:1 179:8 180:16 182:1 184:1 185:31 187:3 188:12 190:4 191:1 192:1222 193:267 194:93 195:56 196:24 197:148 198:376 199:213 200:92 201:2 202:355 203:188 204:310 205:114 206:148 207:126 208:57 209:107 210:85 211:1 212:43 213:2 216:56 217:9 219:11 220:6 222:3 223:9 End of report