IPv4 R&E Routing Table Report 05:56 GMT Mon 13 Jan, 2025 IPv4 BGP Table (R&E) as seen at Internet2. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/ Analysis Summary ---------------- BGP routing table entries examined: 24932 Prefixes after maximum aggregation (per Origin AS): 13620 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 15896 Number of IPv4 prefixes with a valid ROA: 12609 Number of IPv4 prefixes with an invalid ROA: 20 Number of IPv4 prefixes with no ROA: 12303 Total ASes present in the Internet Routing Table: 2810 Prefixes per ASN: 8.87 Origin-only ASes present in the Internet Routing Table: 2426 Origin ASes announcing only one prefix: 1086 Transit ASes present in the Internet Routing Table: 384 Transit-only ASes present in the Internet Routing Table: 73 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.4 Max AS path length visible: 27 Max AS path prepend of ASN (138136) 20 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: 46033 Number of 32-bit ASNs visible in the Routing Table: 678 Prefixes from 32-bit ASNs in the Routing Table: 1825 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: 239625808 Equivalent to 14 /8s, 72 /16s and 102 /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: 3475 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4693 Total APNIC prefixes after maximum aggregation: 2259 APNIC Deaggregation factor: 2.08 Prefixes being announced from the APNIC address blocks: 4807 Unique aggregates announced from the APNIC address blocks: 2726 APNIC Region origin ASes present in the Internet Routing Table: 560 APNIC Prefixes per ASN: 8.58 APNIC Region origin ASes announcing only one prefix: 239 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 27 Number of APNIC region 32-bit ASNs visible in the Routing Table: 210 Number of APNIC addresses announced to Internet: 45658944 Equivalent to 2 /8s, 184 /16s and 179 /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: 14006 Total ARIN prefixes after maximum aggregation: 7731 ARIN Deaggregation factor: 1.81 Prefixes being announced from the ARIN address blocks: 13727 Unique aggregates announced from the ARIN address blocks: 9051 ARIN Region origin ASes present in the Internet Routing Table: 1297 ARIN Prefixes per ASN: 10.58 ARIN Region origin ASes announcing only one prefix: 458 ARIN Region transit ASes present in the Internet Routing Table: 161 Average ARIN Region AS path length visible: 3.1 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 214 Number of ARIN addresses announced to Internet: 128727632 Equivalent to 7 /8s, 172 /16s and 58 /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: 3640 Total RIPE prefixes after maximum aggregation: 2915 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3789 Unique aggregates announced from the RIPE address blocks: 3172 RIPE Region origin ASes present in the Internet Routing Table: 673 RIPE Prefixes per ASN: 5.63 RIPE Region origin ASes announcing only one prefix: 303 RIPE Region transit ASes present in the Internet Routing Table: 111 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 160 Number of RIPE addresses announced to Internet: 58655616 Equivalent to 3 /8s, 127 /16s and 3 /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: 1452 Total LACNIC prefixes after maximum aggregation: 537 LACNIC Deaggregation factor: 2.70 Prefixes being announced from the LACNIC address blocks: 1459 Unique aggregates announced from the LACNIC address blocks: 714 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 9.41 LACNIC Region origin ASes announcing only one prefix: 55 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4170816 Equivalent to 0 /8s, 63 /16s and 164 /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: 1140 Total AfriNIC prefixes after maximum aggregation: 177 AfriNIC Deaggregation factor: 6.44 Prefixes being announced from the AfriNIC address blocks: 1141 Unique aggregates announced from the AfriNIC address blocks: 224 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 22.37 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: 2.9 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30 Number of AfriNIC addresses announced to Internet: 2408704 Equivalent to 0 /8s, 36 /16s and 193 /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 637 2202 464 SINET-AS Research Organization of Informa 7497 449 180 24 CSTNET-AS-AP Computer Network Information 1237 193 74 145 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 313 116 AARNET-AS-AP Australian Academic and Rese 55824 146 19 20 NKN-CORE-NW NKN Core Network, IN 4538 139 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 2697 59 4 34 ERX-ERNET-AS Education and Research Netwo Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 4065 4386 1959 AMAZON-02, US 14618 1006 4444 763 AMAZON-AES, US 2152 517 507 99 CENIC-2152, US 2920 226 44 49 LACOE, US 668 205 646 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 81 129 519 34 NCREN, US 1 128 2 49 LVLT-1, US Complete listing at https://bgp.nsrc.org/REN/Internet2/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 786 185 1767 182 JANET Jisc Services Limited, GB 8895 129 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 ROEDUNET, RO 8987 85 243 61 AMAZON EXPANSION, IE 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 Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 52 5 17 CEDIA, EC 2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 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/Internet2/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 544 82 3 KENET-AS, KE 2018 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37182 7 0 7 TERNET, TZ Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 4065 4386 1959 AMAZON-02, US 14618 1006 4444 763 AMAZON-AES, US 2907 637 2202 464 SINET-AS Research Organization of Informa 36914 544 82 3 KENET-AS, KE 2152 517 507 99 CENIC-2152, US 7497 449 180 24 CSTNET-AS-AP Computer Network Information 2018 380 319 71 TENET-1, ZA 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 2920 226 44 49 LACOE, US 1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 544 541 KENET-AS, KE 7497 449 425 CSTNET-AS-AP Computer Network Information Cente 2152 517 418 CENIC-2152, US 2018 380 309 TENET-1, ZA 14618 1006 243 AMAZON-AES, US 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 226 177 LACOE, US 1916 218 175 Rede Nacional de Ensino e Pesquisa, BR 2907 637 173 SINET-AS Research Organization of Information a Complete listing at https://bgp.nsrc.org/REN/Internet2/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/Internet2/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 64.186.3.0/24 Origin: 16509 AMAZON-02, US 64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US 103.165.160.0/24 Origin: 16509 AMAZON-02, US 103.165.160.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, 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/Internet2/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 /11:2 /12:18 /13:28 /14:58 /15:173 /16:2062 /17:483 /18:506 /19:645 /20:1007 /21:1130 /22:1763 /23:1926 /24:14849 /25:43 /26:67 /27:97 /28:11 /29:59 /30:0 /31:0 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 670 4065 AMAZON-02, US 36914 520 544 KENET-AS, KE 14618 316 1006 AMAZON-AES, US 8895 124 129 ISU Internet Services Unit ISU, SA 1916 60 218 Rede Nacional de Ensino e Pesquisa, BR 2152 60 517 CENIC-2152, US 1 42 128 LVLT-1, US 23024 37 97 OCDE, US 3267 34 78 NIKS, RU 32440 33 58 LONI, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:177 4:2 5:20 6:4 8:2 12:2 13:56 14:93 15:103 16:129 18:155 23:49 24:3 31:3 35:41 37:8 38:11 40:5 41:223 42:11 44:4 45:73 46:10 47:1 49:11 50:11 52:830 54:178 58:1 59:19 60:6 61:3 62:8 63:38 64:148 65:24 66:98 67:68 68:27 69:57 70:22 71:16 72:18 74:80 75:1 76:46 77:12 78:3 79:10 80:12 81:25 82:7 83:7 84:10 85:49 86:5 87:2 88:1 89:19 91:52 92:4 93:45 94:2 95:2 96:7 97:1 98:14 99:68 102:14 103:335 104:134 107:8 108:35 109:7 111:21 113:1 114:24 115:1 116:14 117:66 118:33 119:23 121:28 122:11 123:8 124:42 125:5 128:56 129:41 130:163 131:73 132:64 133:155 134:112 135:2 136:224 137:112 138:65 139:20 140:47 141:13 142:64 143:33 144:41 145:4 146:139 147:78 148:209 149:20 150:73 151:36 152:142 153:14 154:41 155:105 156:133 157:39 158:41 159:168 160:37 161:40 162:74 163:76 164:23 165:78 166:4 167:37 168:173 169:15 170:186 171:1 172:19 173:38 174:2 175:16 176:4 177:6 178:1 179:14 180:16 181:1 182:11 184:9 185:86 186:3 187:22 188:16 189:3 190:34 191:13 192:1598 193:292 194:121 195:78 196:146 197:331 198:610 199:347 200:268 201:37 202:658 203:450 204:425 205:208 206:247 207:349 208:132 209:193 210:219 211:3 212:167 213:19 214:8 216:217 217:14 218:23 219:6 220:16 222:2 223:15 End of report