IPv4 R&E Routing Table Report 22:05 GMT Thu 29 Aug, 2024 IPv4 BGP Table (R&E) as seen at CENIC. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/ Analysis Summary ---------------- BGP routing table entries examined: 19922 Prefixes after maximum aggregation (per Origin AS): 11409 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 12698 Number of IPv4 prefixes with a valid ROA: 6966 Number of IPv4 prefixes with an invalid ROA: 14 Number of IPv4 prefixes with no ROA: 12942 Total ASes present in the Internet Routing Table: 2820 Prefixes per ASN: 7.06 Origin-only ASes present in the Internet Routing Table: 2443 Origin ASes announcing only one prefix: 1085 Transit ASes present in the Internet Routing Table: 377 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 3 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 19 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 45266 Number of 32-bit ASNs visible in the Routing Table: 687 Prefixes from 32-bit ASNs in the Routing Table: 1902 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: 7 Number of addresses announced to Internet: 272716288 Equivalent to 16 /8s, 65 /16s and 82 /24s Percentage of available address space announced: 7.4 Percentage of allocated address space announced: 7.4 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: 2390 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4741 Total APNIC prefixes after maximum aggregation: 2333 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4793 Unique aggregates announced from the APNIC address blocks: 2740 APNIC Region origin ASes present in the Internet Routing Table: 583 APNIC Prefixes per ASN: 8.22 APNIC Region origin ASes announcing only one prefix: 247 APNIC Region transit ASes present in the Internet Routing Table: 62 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 229 Number of APNIC addresses announced to Internet: 47410688 Equivalent to 2 /8s, 211 /16s and 110 /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: 9153 Total ARIN prefixes after maximum aggregation: 5567 ARIN Deaggregation factor: 1.64 Prefixes being announced from the ARIN address blocks: 8810 Unique aggregates announced from the ARIN address blocks: 5844 ARIN Region origin ASes present in the Internet Routing Table: 1296 ARIN Prefixes per ASN: 6.80 ARIN Region origin ASes announcing only one prefix: 451 ARIN Region transit ASes present in the Internet Routing Table: 158 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 210 Number of ARIN addresses announced to Internet: 136303616 Equivalent to 8 /8s, 31 /16s and 212 /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, 393216-402332 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: 3488 Total RIPE prefixes after maximum aggregation: 2793 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3770 Unique aggregates announced from the RIPE address blocks: 3165 RIPE Region origin ASes present in the Internet Routing Table: 662 RIPE Prefixes per ASN: 5.69 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 153 Number of RIPE addresses announced to Internet: 81629184 Equivalent to 4 /8s, 221 /16s and 144 /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: 1374 Total LACNIC prefixes after maximum aggregation: 538 LACNIC Deaggregation factor: 2.55 Prefixes being announced from the LACNIC address blocks: 1375 Unique aggregates announced from the LACNIC address blocks: 720 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 8.76 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4718080 Equivalent to 0 /8s, 71 /16s and 254 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 1164 Total AfriNIC prefixes after maximum aggregation: 176 AfriNIC Deaggregation factor: 6.61 Prefixes being announced from the AfriNIC address blocks: 1167 Unique aggregates announced from the AfriNIC address blocks: 223 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 22.02 AfriNIC Region origin ASes announcing only one prefix: 32 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.9 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2643712 Equivalent to 0 /8s, 40 /16s and 87 /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 588 2169 464 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 1237 190 74 145 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 132 18 19 NKN-CORE-NW NKN Core Network, IN 4538 129 4192 72 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 66 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8075 655 16043 556 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 205 648 174 DNIC-AS-00668, US 376 199 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 155 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 81 133 517 33 NCREN, US 270 117 328 81 AS270, US 23024 95 7 21 OCDE, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 8895 136 24 5 ISU Internet Services Unit ISU, SA 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 97 2015 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 90 26 70 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 76 26 66 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 160 176 42 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 50 5 17 CEDIA, EC 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 3596 37 8 4 Universidad Autonoma Metropolitana, MX Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 523 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37182 37 8 1 TERNET, TZ 327700 32 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 15 8 2 UG-AS, GH 37661 13 8 5 NRaE1-AS, NG 37215 11 8 1 MAREN, MW 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8075 655 16043 556 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 588 2169 464 SINET-AS Research Organization of Informa 36914 523 82 3 KENET-AS, KE 7497 447 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 668 205 648 174 DNIC-AS-00668, US 376 199 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 190 74 145 KREONET-AS-KR KISTI, KR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 523 520 KENET-AS, KE 7497 447 423 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 18558 140 136 NETBLK-RCOEK, US 8895 136 131 ISU Internet Services Unit ISU, SA 2907 588 124 SINET-AS Research Organization of Information a 1916 160 118 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 65208 PRIVATE 206.206.156.0/22 11570 AS11570, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U 202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH 202.46.0.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.0.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 202.46.240.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.240.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese Complete listing at https://bgp.nsrc.org/REN/CENIC/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 /10:3 /11:8 /12:24 /13:31 /14:61 /15:157 /16:2218 /17:449 /18:469 /19:597 /20:896 /21:890 /22:1479 /23:1572 /24:11067 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 500 523 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 8075 116 655 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 38 95 OCDE, US 32440 36 63 LONI, US 37182 36 37 TERNET, TZ 3267 35 76 NIKS, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 55 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:1 4:2 5:16 6:4 8:2 12:1 13:31 14:92 23:9 24:3 31:1 35:7 37:8 38:10 40:1 41:249 42:10 44:5 45:57 46:6 47:1 49:10 50:7 52:6 58:1 59:19 60:6 61:3 62:14 63:36 64:51 65:1 66:54 67:48 68:20 69:27 70:2 71:1 72:8 74:56 76:42 77:10 78:3 79:10 80:13 81:25 82:6 83:6 84:5 85:33 86:5 87:1 89:11 91:49 92:4 93:13 94:6 95:3 96:5 97:2 98:2 101:1 102:13 103:332 104:79 107:2 108:11 109:4 111:17 113:6 114:24 116:9 117:61 118:34 119:23 121:27 122:8 123:8 124:42 125:5 128:84 129:37 130:96 131:70 132:67 133:154 134:109 135:4 136:198 137:56 138:62 139:6 140:36 141:4 142:29 143:24 144:28 145:6 146:135 147:64 148:194 149:14 150:46 151:11 152:136 153:15 154:37 155:70 156:133 157:17 158:37 159:122 160:30 161:25 162:40 163:65 164:20 165:48 166:3 167:29 168:119 169:7 170:103 171:1 172:2 173:7 175:17 176:1 177:5 178:2 179:13 180:16 181:1 182:9 184:7 185:81 186:3 187:21 188:14 189:3 190:18 191:13 192:1511 193:258 194:129 195:68 196:151 197:317 198:490 199:306 200:289 201:38 202:642 203:446 204:390 205:139 206:213 207:229 208:74 209:116 210:221 211:14 212:167 213:10 214:8 216:97 217:11 218:22 219:5 220:17 222:2 223:15 End of report