IPv4 R&E Routing Table Report 17:05 GMT Fri 24 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: 14096 Prefixes after maximum aggregation (per Origin AS): 8491 Deaggregation factor: 1.66 Unique aggregates announced (without unneeded subnets): 9454 Number of IPv4 prefixes with a valid ROA: 3545 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 10551 Total ASes present in the Internet Routing Table: 2140 Prefixes per ASN: 6.59 Origin-only ASes present in the Internet Routing Table: 1856 Origin ASes announcing only one prefix: 840 Transit ASes present in the Internet Routing Table: 284 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: 4.5 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: 41266 Number of 32-bit ASNs visible in the Routing Table: 482 Prefixes from 32-bit ASNs in the Routing Table: 1343 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: 170588544 Equivalent to 10 /8s, 42 /16s and 249 /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: 1443 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3857 Total APNIC prefixes after maximum aggregation: 2018 APNIC Deaggregation factor: 1.91 Prefixes being announced from the APNIC address blocks: 3858 Unique aggregates announced from the APNIC address blocks: 2244 APNIC Region origin ASes present in the Internet Routing Table: 466 APNIC Prefixes per ASN: 8.28 APNIC Region origin ASes announcing only one prefix: 205 APNIC Region transit ASes present in the Internet Routing Table: 51 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 180 Number of APNIC addresses announced to Internet: 38725984 Equivalent to 2 /8s, 78 /16s and 233 /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: 6147 Total ARIN prefixes after maximum aggregation: 3613 ARIN Deaggregation factor: 1.70 Prefixes being announced from the ARIN address blocks: 6159 Unique aggregates announced from the ARIN address blocks: 4087 ARIN Region origin ASes present in the Internet Routing Table: 946 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: 134 Number of ARIN addresses announced to Internet: 73797376 Equivalent to 4 /8s, 102 /16s and 15 /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: 2906 Total RIPE prefixes after maximum aggregation: 2443 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 2899 Unique aggregates announced from the RIPE address blocks: 2528 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: 55218560 Equivalent to 3 /8s, 74 /16s and 145 /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: 702 Total LACNIC prefixes after maximum aggregation: 363 LACNIC Deaggregation factor: 1.93 Prefixes being announced from the LACNIC address blocks: 698 Unique aggregates announced from the LACNIC address blocks: 519 LACNIC Region origin ASes present in the Internet Routing Table: 87 LACNIC Prefixes per ASN: 8.02 LACNIC Region origin ASes announcing only one prefix: 40 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: 30 Number of LACNIC addresses announced to Internet: 2032288 Equivalent to 0 /8s, 31 /16s and 2 /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: 481 Total AfriNIC prefixes after maximum aggregation: 51 AfriNIC Deaggregation factor: 9.43 Prefixes being announced from the AfriNIC address blocks: 481 Unique aggregates announced from the AfriNIC address blocks: 75 AfriNIC Region origin ASes present in the Internet Routing Table: 28 AfriNIC Prefixes per ASN: 17.18 AfriNIC Region origin ASes announcing only one prefix: 11 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: 11 Number of AfriNIC addresses announced to Internet: 814080 Equivalent to 0 /8s, 12 /16s and 108 /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 432 180 21 CSTNET-AS-AP Computer Network Informati 4538 191 4192 73 ERX-CERNET-BKB China Education and Rese 1237 187 74 134 KREONET-AS-KR KISTI, KR 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 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 376 198 178 147 RISQ-AS, CA 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 93 18 16 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 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 1916 125 62 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 2715 56 101 36 Fundacao Carlos Chagas Filho de Amparo 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 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 60 28 3 RENU, UG 3208 32 2 1 ARN, DZ 37182 32 8 1 TERNET, TZ 327700 32 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37654 10 1 6 RwEdNet-AS, RW 2561 7 0 5 EUN, EG 328358 5 1 1 Makerere-AS, UG 30983 4 4 1 MARWAN-AS, MA 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 432 180 21 CSTNET-AS-AP Computer Network Informati 680 282 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 244 82 3 KENET-AS, KE 5786 199 16 1 UPRENET, PR 376 198 178 147 RISQ-AS, CA 4538 191 4192 73 ERX-CERNET-BKB China Education and Rese 1237 187 74 134 KREONET-AS-KR KISTI, KR 786 186 1775 183 JANET Jisc Services Limited, GB 58647 177 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 7497 432 411 CSTNET-AS-AP Computer Network Information Cente 36914 244 241 KENET-AS, KE 5786 199 198 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 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 /16:1662 /17:292 /18:311 /19:417 /20:596 /21:654 /22:1069 /23:1195 /24:7558 /25:52 /26:49 /27:77 /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 78 93 LONI, US 23024 52 112 OCDE, US 37182 31 32 TERNET, TZ 200521 30 53 SEAP-AGE, ES 25977 27 30 HCCS, US 327700 27 32 MoRENet, MZ 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 41:136 42:11 44:4 45:21 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 69:12 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 91:36 93:4 94:2 95:2 96:5 101:4 102:11 103:216 104:70 108:6 109:3 110:2 111:16 114:7 116:6 118:18 119:21 121:28 122:8 123:8 124:39 125:1 128:62 129:27 130:85 131:54 132:46 133:149 134:90 136:198 137:83 138:9 139:5 140:30 141:1 142:39 143:17 144:23 145:2 146:93 147:24 148:7 149:12 150:109 151:9 152:67 153:6 154:6 155:40 156:67 157:21 158:33 159:114 160:27 161:16 162:15 163:72 164:7 165:11 167:11 168:57 169:8 170:25 172:2 173:7 175:25 177:7 179:8 180:16 182:1 185:31 186:2 187:3 188:12 189:3 190:6 191:1 192:1216 193:269 194:93 195:57 196:26 197:147 198:356 199:202 200:180 201:21 202:465 203:351 204:301 205:107 206:146 207:122 208:59 209:105 210:180 211:5 212:43 213:2 216:53 217:10 218:2 219:11 220:7 222:5 223:9 End of report