IPv4 R&E Routing Table Report 17:05 GMT Sun 27 Aug, 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: 12995 Prefixes after maximum aggregation (per Origin AS): 7915 Deaggregation factor: 1.64 Unique aggregates announced (without unneeded subnets): 8744 Number of IPv4 prefixes with a valid ROA: 4100 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 8894 Total ASes present in the Internet Routing Table: 2070 Prefixes per ASN: 6.28 Origin-only ASes present in the Internet Routing Table: 1785 Origin ASes announcing only one prefix: 819 Transit ASes present in the Internet Routing Table: 285 Transit-only ASes present in the Internet Routing Table: 48 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: 16 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 42515 Number of 32-bit ASNs visible in the Routing Table: 494 Prefixes from 32-bit ASNs in the Routing Table: 1451 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: 166385440 Equivalent to 9 /8s, 234 /16s and 215 /24s Percentage of available address space announced: 4.5 Percentage of allocated address space announced: 4.5 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: 1440 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 2839 Total APNIC prefixes after maximum aggregation: 1695 APNIC Deaggregation factor: 1.67 Prefixes being announced from the APNIC address blocks: 2839 Unique aggregates announced from the APNIC address blocks: 1857 APNIC Region origin ASes present in the Internet Routing Table: 403 APNIC Prefixes per ASN: 7.04 APNIC Region origin ASes announcing only one prefix: 182 APNIC Region transit ASes present in the Internet Routing Table: 41 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 160 Number of APNIC addresses announced to Internet: 37295968 Equivalent to 2 /8s, 57 /16s and 23 /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: 5710 Total ARIN prefixes after maximum aggregation: 3338 ARIN Deaggregation factor: 1.71 Prefixes being announced from the ARIN address blocks: 5717 Unique aggregates announced from the ARIN address blocks: 3724 ARIN Region origin ASes present in the Internet Routing Table: 900 ARIN Prefixes per ASN: 6.35 ARIN Region origin ASes announcing only one prefix: 314 ARIN Region transit ASes present in the Internet Routing Table: 122 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: 133 Number of ARIN addresses announced to Internet: 70285664 Equivalent to 4 /8s, 48 /16s and 121 /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: 2893 Total RIPE prefixes after maximum aggregation: 2427 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 2885 Unique aggregates announced from the RIPE address blocks: 2512 RIPE Region origin ASes present in the Internet Routing Table: 559 RIPE Prefixes per ASN: 5.16 RIPE Region origin ASes announcing only one prefix: 250 RIPE Region transit ASes present in the Internet Routing Table: 85 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: 54996608 Equivalent to 3 /8s, 71 /16s and 46 /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, 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: 937 Total LACNIC prefixes after maximum aggregation: 383 LACNIC Deaggregation factor: 2.45 Prefixes being announced from the LACNIC address blocks: 937 Unique aggregates announced from the LACNIC address blocks: 554 LACNIC Region origin ASes present in the Internet Routing Table: 115 LACNIC Prefixes per ASN: 8.15 LACNIC Region origin ASes announcing only one prefix: 49 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 4.7 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 50 Number of LACNIC addresses announced to Internet: 2899424 Equivalent to 0 /8s, 44 /16s and 61 /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: 615 Total AfriNIC prefixes after maximum aggregation: 71 AfriNIC Deaggregation factor: 8.66 Prefixes being announced from the AfriNIC address blocks: 615 Unique aggregates announced from the AfriNIC address blocks: 95 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 13.98 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 4.1 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 907264 Equivalent to 0 /8s, 13 /16s and 216 /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 594 2146 464 SINET-AS Research Organization of Infor 4538 185 4193 74 ERX-CERNET-BKB China Education and Rese 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 177 329 120 AARNET-AS-AP Australian Academic and Re 55824 124 18 17 NKN-CORE-NW NKN Core Network, IN 2697 56 4 33 ERX-ERNET-AS Education and Research Net 45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 132524 46 9 11 TIFR-AS Tata Institute of Fundamental R 9270 33 5 6 APAN-KR-AS National Infomation Society 24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeas 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 197 16 1 UPRENET, PR 2152 148 507 92 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 270 118 329 82 AS270, US 23024 112 7 19 OCDE, US 2920 109 34 7 LACOE, US 32440 104 34 18 LONI, US 376 94 8 64 RISQ-AS, CA 21976 82 51 18 NJEDGE-NET, US 1736 79 16 1 MU-AS, 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 680 283 1903 249 DFN Verein zur Foerderung eines Deutsch 786 185 1767 182 JANET Jisc Services Limited, GB 559 113 533 105 SWITCH Peering requests: peering@switch 1103 94 1502 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 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 55 4 21 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 258 160 42 Rede Nacional de Ensino e Pesquisa, BR 11340 104 24 48 Red Universitaria Nacional, CL 2715 48 37 31 Fundacao Carlos Chagas Filho de Amparo 61468 43 3 14 CEDIA, EC 271640 34 2 7 UNIVERSIDADE FEDERAL DE VICOSA, BR 263683 33 10 21 Universidad de Costa Rica, CR 1251 31 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 20191 28 16 1 Pontificia Universidad Catolica de Chil 3597 20 2 14 Fundacion InnovaT, AR 27790 18 2 2 Universidad Nacional de Cordoba, AR 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 259 82 3 KENET-AS, KE 327687 166 28 3 RENU, UG 327700 41 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 11 7 7 UG-AS, GH 37654 10 1 6 RwEdNet-AS, RW 37215 7 8 1 MAREN, MW 31960 5 1 1 EMUNET, MZ 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 594 2146 464 SINET-AS Research Organization of Infor 680 283 1903 249 DFN Verein zur Foerderung eines Deutsch 36914 259 82 3 KENET-AS, KE 1916 258 160 42 Rede Nacional de Ensino e Pesquisa, BR 5786 197 16 1 UPRENET, PR 786 185 1767 182 JANET Jisc Services Limited, GB 4538 185 4193 74 ERX-CERNET-BKB China Education and Rese 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 177 329 120 AARNET-AS-AP Australian Academic and Re 327687 166 28 3 RENU, UG 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 259 256 KENET-AS, KE 1916 258 216 Rede Nacional de Ensino e Pesquisa, BR 5786 197 196 UPRENET, PR 58647 178 176 KAGAWAU-AS Kagawa University, JP 327687 166 163 RENU, UG 18558 136 132 NETBLK-RCOEK, US 4538 185 111 ERX-CERNET-BKB China Education and Research Net 55824 124 107 NKN-CORE-NW NKN Core Network, IN 2920 109 102 LACOE, US 23024 112 93 OCDE, 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 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 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU 202.58.231.0/24 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 /10:2 /11:0 /12:9 /13:17 /14:33 /15:100 /16:1596 /17:309 /18:300 /19:418 /20:612 /21:593 /22:966 /23:1005 /24:6860 /25:44 /26:62 /27:68 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 247 259 KENET-AS, KE 32440 77 104 LONI, US 23024 52 112 OCDE, US 1916 39 258 Rede Nacional de Ensino e Pesquisa, BR 327700 35 41 MoRENet, MZ 200521 32 55 SEAP-AGE, ES 25977 27 41 HCCS, US 327687 25 166 RENU, UG 26898 24 32 LNOCA-ORG, US 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 14:88 23:3 24:3 31:3 35:2 38:4 40:1 41:120 42:8 44:5 45:30 46:5 49:9 52:1 58:12 59:9 61:2 62:6 63:4 64:25 65:1 66:7 67:33 68:1 69:10 70:2 72:7 74:10 76:37 77:8 78:3 79:10 80:8 81:25 82:2 83:6 84:6 85:24 87:1 89:10 91:36 93:4 94:2 95:2 96:5 101:1 102:36 103:216 104:71 108:6 109:3 110:1 111:16 114:1 116:6 118:18 119:1 121:28 122:8 123:8 124:2 128:67 129:30 130:83 131:47 132:49 133:152 134:71 136:195 137:124 138:10 139:4 140:25 141:1 142:18 143:13 144:23 145:2 146:118 147:20 148:7 149:12 150:12 151:12 152:112 153:6 154:6 155:44 156:67 157:6 158:30 159:18 160:28 161:21 162:13 163:76 164:8 165:7 167:10 168:55 169:7 170:17 172:3 173:6 175:17 177:4 179:12 180:14 181:1 182:1 184:3 185:35 186:2 187:1 188:12 189:3 190:19 191:2 192:1173 193:258 194:89 195:60 196:62 197:164 198:365 199:194 200:250 201:21 202:353 203:188 204:274 205:70 206:127 207:121 208:53 209:99 210:20 211:1 212:41 213:2 216:50 217:9 219:10 220:2 222:2 End of report