IPv4 R&E Routing Table Report 22:00 GMT Sat 07 Dec, 2024 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: 24896 Prefixes after maximum aggregation (per Origin AS): 13605 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 15878 Number of IPv4 prefixes with a valid ROA: 12581 Number of IPv4 prefixes with an invalid ROA: 20 Number of IPv4 prefixes with no ROA: 12295 Total ASes present in the Internet Routing Table: 2794 Prefixes per ASN: 8.91 Origin-only ASes present in the Internet Routing Table: 2413 Origin ASes announcing only one prefix: 1074 Transit ASes present in the Internet Routing Table: 381 Transit-only ASes present in the Internet Routing Table: 66 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: 45967 Number of 32-bit ASNs visible in the Routing Table: 673 Prefixes from 32-bit ASNs in the Routing Table: 1871 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: 242277712 Equivalent to 14 /8s, 112 /16s and 221 /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: 3456 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4639 Total APNIC prefixes after maximum aggregation: 2255 APNIC Deaggregation factor: 2.06 Prefixes being announced from the APNIC address blocks: 4747 Unique aggregates announced from the APNIC address blocks: 2723 APNIC Region origin ASes present in the Internet Routing Table: 560 APNIC Prefixes per ASN: 8.48 APNIC Region origin ASes announcing only one prefix: 237 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: 208 Number of APNIC addresses announced to Internet: 45573696 Equivalent to 2 /8s, 183 /16s and 102 /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: 14037 Total ARIN prefixes after maximum aggregation: 7737 ARIN Deaggregation factor: 1.81 Prefixes being announced from the ARIN address blocks: 13759 Unique aggregates announced from the ARIN address blocks: 9041 ARIN Region origin ASes present in the Internet Routing Table: 1291 ARIN Prefixes per ASN: 10.66 ARIN Region origin ASes announcing only one prefix: 450 ARIN Region transit ASes present in the Internet Routing Table: 159 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: 216 Number of ARIN addresses announced to Internet: 131329360 Equivalent to 7 /8s, 211 /16s and 237 /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: 3624 Total RIPE prefixes after maximum aggregation: 2897 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3779 Unique aggregates announced from the RIPE address blocks: 3162 RIPE Region origin ASes present in the Internet Routing Table: 669 RIPE Prefixes per ASN: 5.65 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 109 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: 156 Number of RIPE addresses announced to Internet: 58661760 Equivalent to 3 /8s, 127 /16s and 27 /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: 1447 Total LACNIC prefixes after maximum aggregation: 543 LACNIC Deaggregation factor: 2.66 Prefixes being announced from the LACNIC address blocks: 1455 Unique aggregates announced from the LACNIC address blocks: 726 LACNIC Region origin ASes present in the Internet Routing Table: 156 LACNIC Prefixes per ASN: 9.33 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: 4.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63 Number of LACNIC addresses announced to Internet: 4232256 Equivalent to 0 /8s, 64 /16s and 148 /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: 1148 Total AfriNIC prefixes after maximum aggregation: 172 AfriNIC Deaggregation factor: 6.67 Prefixes being announced from the AfriNIC address blocks: 1149 Unique aggregates announced from the AfriNIC address blocks: 219 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 22.53 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: 2477056 Equivalent to 0 /8s, 37 /16s and 204 /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 596 2200 462 SINET-AS Research Organization of Informa 7497 446 180 24 CSTNET-AS-AP Computer Network Information 1237 193 74 145 KREONET-AS-KR KISTI, KR 58647 181 18 2 KAGAWAU-AS Kagawa University, JP 7575 171 313 114 AARNET-AS-AP Australian Academic and Rese 4538 139 4192 71 ERX-CERNET-BKB China Education and Resear 55824 131 18 18 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 2697 60 4 35 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 4030 4874 1947 AMAZON-02, US 14618 1020 4484 768 AMAZON-AES, US 2152 511 507 99 CENIC-2152, US 2920 224 44 49 LACOE, US 668 205 648 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 141 18 5 NETBLK-RCOEK, US 81 134 517 33 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 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 786 186 1767 183 JANET Jisc Services Limited, GB 8895 132 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 137 82 677 77 ASGARR Consortium GARR, IT 8987 81 226 58 AMAZON EXPANSION, IE 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 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 53 5 19 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 541 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 327700 16 16 1 MoRENet, MZ 37074 15 8 2 UG-AS, GH 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 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 4030 4874 1947 AMAZON-02, US 14618 1020 4484 768 AMAZON-AES, US 2907 596 2200 462 SINET-AS Research Organization of Informa 36914 541 82 3 KENET-AS, KE 2152 511 507 99 CENIC-2152, US 7497 446 180 24 CSTNET-AS-AP Computer Network Information 2018 380 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 2920 224 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 541 538 KENET-AS, KE 7497 446 422 CSTNET-AS-AP Computer Network Information Cente 2152 511 412 CENIC-2152, US 2018 380 309 TENET-1, ZA 14618 1020 252 AMAZON-AES, US 5786 198 197 UPRENET, PR 58647 181 179 KAGAWAU-AS Kagawa University, JP 2920 224 175 LACOE, US 1916 218 175 Rede Nacional de Ensino e Pesquisa, BR 18558 141 136 NETBLK-RCOEK, US 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 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 Transit: 16509 AMAZON-02, US 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 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 /11:3 /12:18 /13:28 /14:58 /15:173 /16:2072 /17:491 /18:506 /19:647 /20:1005 /21:1122 /22:1753 /23:1930 /24:14814 /25:42 /26:62 /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 672 4030 AMAZON-02, US 36914 517 541 KENET-AS, KE 14618 325 1020 AMAZON-AES, US 8895 127 132 ISU Internet Services Unit ISU, SA 2152 61 511 CENIC-2152, US 1916 60 218 Rede Nacional de Ensino e Pesquisa, BR 1 42 128 LVLT-1, US 23024 37 95 OCDE, US 32440 37 63 LONI, US 3267 34 77 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:166 4:2 5:20 6:4 8:2 12:2 13:56 14:92 15:105 16:129 18:153 23:49 24:3 31:3 34:2 35:41 37:8 38:11 40:5 41:225 42:11 44:6 45:74 46:10 47:1 49:10 50:12 52:830 54:178 58:1 59:19 60:5 61:3 62:7 63:38 64:142 65:25 66:97 67:69 68:27 69:56 70:22 71:16 72:19 74:81 75:1 76:49 77:12 78:3 79:10 80:12 81:25 82:7 83:7 84:9 85:49 86:5 87:2 88:1 89:19 91:53 92:4 93:45 94:2 95:2 96:7 97:1 98:14 99:68 101:1 102:14 103:334 104:132 107:8 108:37 109:7 111:21 113:1 114:24 115:1 116:14 117:66 118:33 119:23 121:28 122:11 123:8 124:42 125:5 128:55 129:41 130:163 131:74 132:65 133:154 134:112 135:2 136:224 137:115 138:66 139:20 140:50 141:13 142:77 143:34 144:42 145:4 146:138 147:75 148:206 149:19 150:43 151:36 152:149 153:14 154:40 155:104 156:132 157:41 158:41 159:169 160:35 161:40 162:74 163:76 164:23 165:75 166:5 167:37 168:174 169:15 170:183 171:1 172:19 173:38 174:2 175:16 176:4 177:6 178:1 179:11 180:16 181:1 182:11 184:9 185:84 186:3 187:21 188:15 189:2 190:18 191:13 192:1598 193:291 194:127 195:72 196:147 197:330 198:607 199:349 200:287 201:37 202:653 203:450 204:433 205:206 206:244 207:344 208:133 209:197 210:219 211:3 212:171 213:19 214:8 216:213 217:11 218:23 219:6 220:16 222:2 223:15 End of report