IPv4 R&E Routing Table Report 22:10 GMT Fri 21 Feb, 2025 IPv4 BGP Table (R&E) as seen at CEDIA. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CEDIA/ Analysis Summary ---------------- BGP routing table entries examined: 27148 Prefixes after maximum aggregation (per Origin AS): 13172 Deaggregation factor: 2.06 Unique aggregates announced (without unneeded subnets): 14967 Number of IPv4 prefixes with a valid ROA: 15279 Number of IPv4 prefixes with an invalid ROA: 158 Number of IPv4 prefixes with no ROA: 11711 Total ASes present in the Internet Routing Table: 2819 Prefixes per ASN: 9.63 Origin-only ASes present in the Internet Routing Table: 2438 Origin ASes announcing only one prefix: 1086 Transit ASes present in the Internet Routing Table: 381 Transit-only ASes present in the Internet Routing Table: 72 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 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: 46157 Number of 32-bit ASNs visible in the Routing Table: 702 Prefixes from 32-bit ASNs in the Routing Table: 4937 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: 9 Number of addresses announced to Internet: 240352841 Equivalent to 14 /8s, 83 /16s and 126 /24s Percentage of available address space announced: 6.5 Percentage of allocated address space announced: 6.5 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: 3868 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4802 Total APNIC prefixes after maximum aggregation: 2308 APNIC Deaggregation factor: 2.08 Prefixes being announced from the APNIC address blocks: 4868 Unique aggregates announced from the APNIC address blocks: 2741 APNIC Region origin ASes present in the Internet Routing Table: 590 APNIC Prefixes per ASN: 8.25 APNIC Region origin ASes announcing only one prefix: 248 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 5.6 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 235 Number of APNIC addresses announced to Internet: 45601344 Equivalent to 2 /8s, 183 /16s and 210 /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, 131072-155961 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: 15825 Total ARIN prefixes after maximum aggregation: 7116 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 15532 Unique aggregates announced from the ARIN address blocks: 7932 ARIN Region origin ASes present in the Internet Routing Table: 1287 ARIN Prefixes per ASN: 12.07 ARIN Region origin ASes announcing only one prefix: 461 ARIN Region transit ASes present in the Internet Routing Table: 163 Average ARIN Region AS path length visible: 4.5 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 221 Number of ARIN addresses announced to Internet: 129893505 Equivalent to 7 /8s, 190 /16s and 4 /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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 3698 Total RIPE prefixes after maximum aggregation: 2937 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3907 Unique aggregates announced from the RIPE address blocks: 3260 RIPE Region origin ASes present in the Internet Routing Table: 662 RIPE Prefixes per ASN: 5.90 RIPE Region origin ASes announcing only one prefix: 296 RIPE Region transit ASes present in the Internet Routing Table: 103 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 153 Number of RIPE addresses announced to Internet: 58201104 Equivalent to 3 /8s, 120 /16s and 20 /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, 53/8, 57/8, 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: 1633 Total LACNIC prefixes after maximum aggregation: 635 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1641 Unique aggregates announced from the LACNIC address blocks: 798 LACNIC Region origin ASes present in the Internet Routing Table: 154 LACNIC Prefixes per ASN: 10.66 LACNIC Region origin ASes announcing only one prefix: 50 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.6 Max LACNIC Region AS path length visible: 15 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4210296 Equivalent to 0 /8s, 64 /16s and 62 /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: 1189 Total AfriNIC prefixes after maximum aggregation: 175 AfriNIC Deaggregation factor: 6.79 Prefixes being announced from the AfriNIC address blocks: 1191 Unique aggregates announced from the AfriNIC address blocks: 227 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 22.47 AfriNIC Region origin ASes announcing only one prefix: 31 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 20 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2442240 Equivalent to 0 /8s, 37 /16s and 68 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 639 2170 465 SINET-AS Research Organization of Informa 7497 451 180 24 CSTNET-AS-AP Computer Network Information 1237 194 74 146 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 297 117 AARNET-AS-AP Australian Academic and Rese 55824 147 19 21 NKN-CORE-NW NKN Core Network, IN 4538 140 4192 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 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/CEDIA/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 396982 2931 3660 450 GOOGLE-CLOUD-PLATFORM, US 16509 2403 1841 1087 AMAZON-02, US 14618 1016 4445 775 AMAZON-AES, US 15169 947 2007 68 GOOGLE, US 2152 409 507 98 CENIC-2152, US 2920 221 44 45 LACOE, US 376 202 162 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 81 129 519 34 NCREN, US Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 194 1751 186 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 8895 110 24 5 ISU Internet Services Unit ISU, SA 1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 26 73 ROEDUNET, RO 31638 86 12 44 ASN-LEPIDA, IT 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 3267 79 29 69 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 311 178 44 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 118 25 55 Red Universitaria Nacional, CL 27947 111 0 85 Telconet S.A, EC 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 53 16 1 Red de Interconexion Universitaria, AR 2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 3596 40 8 4 Universidad Autonoma Metropolitana, MX 28614 38 2 2 Fundacao Universidade Regional de Blumena Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 556 82 3 KENET-AS, KE 2018 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37182 36 8 1 TERNET, TZ 37215 34 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 396982 2931 3660 450 GOOGLE-CLOUD-PLATFORM, US 16509 2403 1841 1087 AMAZON-02, US 14618 1016 4445 775 AMAZON-AES, US 15169 947 2007 68 GOOGLE, US 2907 639 2170 465 SINET-AS Research Organization of Informa 36914 556 82 3 KENET-AS, KE 7497 451 180 24 CSTNET-AS-AP Computer Network Information 2152 409 507 98 CENIC-2152, US 2018 380 319 71 TENET-1, ZA 1916 311 178 44 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 16509 2403 1316 AMAZON-02, US 15169 947 879 GOOGLE, US 36914 556 553 KENET-AS, KE 7497 451 427 CSTNET-AS-AP Computer Network Information Cente 2152 409 311 CENIC-2152, US 2018 380 309 TENET-1, ZA 1916 311 267 Rede Nacional de Ensino e Pesquisa, BR 14618 1016 241 AMAZON-AES, US 5786 197 196 UPRENET, PR 58647 183 181 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/CEDIA/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 Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 103.165.160.0/24 Origin: 16509 AMAZON-02, US 103.165.160.0/24 Transit: 27750 Cooperacion Latino Americana de Redes Av 103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US 103.177.50.0/23 Transit: 15169 GOOGLE, US 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 192.225.212.0/24 Origin: 14618 AMAZON-AES, US 192.225.212.0/24 Transit: 16509 AMAZON-02, US 192.225.223.0/24 Origin: 14618 AMAZON-AES, US 192.225.223.0/24 Transit: 16509 AMAZON-02, US Complete listing at https://bgp.nsrc.org/REN/CEDIA/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 /10:1 /11:4 /12:20 /13:37 /14:81 /15:157 /16:2085 /17:529 /18:520 /19:759 /20:2812 /21:1125 /22:1709 /23:1842 /24:15130 /25:53 /26:78 /27:38 /28:20 /29:72 /30:32 /31:39 /32:4 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 532 556 KENET-AS, KE 16509 388 2403 AMAZON-02, US 14618 319 1016 AMAZON-AES, US 15169 269 947 GOOGLE, US 396982 269 2931 GOOGLE-CLOUD-PLATFORM, US 8895 107 110 ISU Internet Services Unit ISU, SA 27947 87 111 Telconet S.A, EC 1916 74 311 Rede Nacional de Ensino e Pesquisa, BR 31638 64 86 ASN-LEPIDA, IT 2152 45 409 CENIC-2152, US Complete listing at https://bgp.nsrc.org/REN/CEDIA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 3:101 5:24 8:28 12:2 13:49 14:93 15:74 16:119 18:85 23:117 24:3 31:5 34:23 35:63 36:1 37:8 38:11 40:5 41:257 42:11 43:2 44:4 45:73 46:9 47:1 49:11 50:6 52:550 54:163 57:8 59:19 60:6 61:3 62:8 63:36 64:154 65:25 66:88 67:67 68:16 69:40 70:37 71:3 72:15 74:154 75:1 76:41 77:13 78:3 79:10 80:14 81:24 82:7 83:9 84:7 85:57 86:8 87:6 88:1 89:26 91:53 92:7 93:48 94:5 95:2 96:7 97:1 98:11 99:48 101:1 102:15 103:372 104:243 107:38 108:109 109:8 111:21 113:1 114:32 115:1 116:11 117:62 118:33 119:30 121:28 122:7 123:8 124:42 125:5 128:58 129:41 130:145 131:66 132:64 133:156 134:106 135:3 136:305 137:105 138:60 139:17 140:41 141:10 142:342 143:25 144:43 145:3 146:146 147:45 148:206 149:18 150:70 151:41 152:147 153:14 154:45 155:86 156:139 157:32 158:37 159:155 160:34 161:33 162:91 163:71 164:21 165:68 166:2 167:37 168:172 169:13 170:165 171:1 172:116 173:110 174:2 175:16 176:4 177:5 178:1 179:10 180:16 182:11 184:7 185:108 186:3 187:17 188:24 189:3 190:18 191:13 192:1537 193:324 194:125 195:83 196:149 197:339 198:571 199:335 200:327 201:35 202:648 203:439 204:407 205:188 206:236 207:295 208:148 209:240 210:223 211:3 212:151 213:15 216:217 217:15 218:23 219:6 220:16 222:2 223:15 End of report