IPv4 R&E Routing Table Report 22:00 GMT Mon 20 Feb, 2023 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: 22947 Prefixes after maximum aggregation (per Origin AS): 12752 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 14905 Number of IPv4 prefixes with a valid ROA: 8352 Number of IPv4 prefixes with an invalid ROA: 84 Number of IPv4 prefixes with no ROA: 14511 Total ASes present in the Internet Routing Table: 2778 Prefixes per ASN: 8.26 Origin-only ASes present in the Internet Routing Table: 2405 Origin ASes announcing only one prefix: 1059 Transit ASes present in the Internet Routing Table: 373 Transit-only ASes present in the Internet Routing Table: 61 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.3 Max AS path length visible: 18 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 5 Number of instances of unregistered ASNs: 5 Number of 32-bit ASNs allocated by the RIRs: 41223 Number of 32-bit ASNs visible in the Routing Table: 641 Prefixes from 32-bit ASNs in the Routing Table: 1798 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: 5 Number of addresses announced to Internet: 242209944 Equivalent to 14 /8s, 111 /16s and 212 /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: 3004 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4704 Total APNIC prefixes after maximum aggregation: 2303 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4773 Unique aggregates announced from the APNIC address blocks: 2701 APNIC Region origin ASes present in the Internet Routing Table: 580 APNIC Prefixes per ASN: 8.23 APNIC Region origin ASes announcing only one prefix: 246 APNIC Region transit ASes present in the Internet Routing Table: 65 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 225 Number of APNIC addresses announced to Internet: 45848384 Equivalent to 2 /8s, 187 /16s and 151 /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, 131072-151865 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: 12227 Total ARIN prefixes after maximum aggregation: 6824 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 12022 Unique aggregates announced from the ARIN address blocks: 8066 ARIN Region origin ASes present in the Internet Routing Table: 1246 ARIN Prefixes per ASN: 9.65 ARIN Region origin ASes announcing only one prefix: 429 ARIN Region transit ASes present in the Internet Routing Table: 158 Average ARIN Region AS path length visible: 2.9 Max ARIN Region AS path length visible: 18 Number of ARIN region 32-bit ASNs visible in the Routing Table: 186 Number of ARIN addresses announced to Internet: 131801912 Equivalent to 7 /8s, 219 /16s and 35 /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: 3623 Total RIPE prefixes after maximum aggregation: 2868 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3757 Unique aggregates announced from the RIPE address blocks: 3075 RIPE Region origin ASes present in the Internet Routing Table: 687 RIPE Prefixes per ASN: 5.47 RIPE Region origin ASes announcing only one prefix: 306 RIPE Region transit ASes present in the Internet Routing Table: 100 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 143 Number of RIPE addresses announced to Internet: 58012928 Equivalent to 3 /8s, 117 /16s and 53 /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 196608-213403 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: 1355 Total LACNIC prefixes after maximum aggregation: 545 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1358 Unique aggregates announced from the LACNIC address blocks: 766 LACNIC Region origin ASes present in the Internet Routing Table: 147 LACNIC Prefixes per ASN: 9.24 LACNIC Region origin ASes announcing only one prefix: 54 LACNIC Region transit ASes present in the Internet Routing Table: 21 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 58 Number of LACNIC addresses announced to Internet: 3890720 Equivalent to 0 /8s, 59 /16s and 94 /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: 1033 Total AfriNIC prefixes after maximum aggregation: 207 AfriNIC Deaggregation factor: 4.99 Prefixes being announced from the AfriNIC address blocks: 1032 Unique aggregates announced from the AfriNIC address blocks: 292 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 19.47 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.0 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 29 Number of AfriNIC addresses announced to Internet: 2654464 Equivalent to 0 /8s, 40 /16s and 129 /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 590 2157 463 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 1237 188 74 134 KREONET-AS-KR KISTI, KR 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 119 18 12 NKN-CORE-NW NKN Core Network, IN 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 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 3183 4620 1399 AMAZON-02, US 14618 740 3995 551 AMAZON-AES, US 668 219 702 180 DNIC-AS-00668, US 376 200 178 149 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 2152 152 507 92 CSUNET-NW, US 18558 134 18 4 NETBLK-RCOEK, US 1 120 2 46 LVLT-1, US 270 120 329 85 AS270, US 23024 113 7 17 OCDE, 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 680 281 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 8895 177 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 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 178 207 42 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 104 24 47 Red Universitaria Nacional, CL 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 1251 53 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 61468 46 3 14 CEDIA, EC 4270 45 16 1 Red de Interconexion Universitaria, AR 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 28571 37 40 18 UNIVERSIDADE DE SAO PAULO, BR 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 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 2018 377 319 72 TENET-1, ZA 36914 251 82 3 KENET-AS, KE 2561 67 4 34 EUN, EG 327687 55 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 33 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 37182 31 8 1 TERNET, TZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 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 3183 4620 1399 AMAZON-02, US 14618 740 3995 551 AMAZON-AES, US 2907 590 2157 463 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 2018 377 319 72 TENET-1, ZA 680 281 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 251 82 3 KENET-AS, KE 668 219 702 180 DNIC-AS-00668, US 376 200 178 149 RISQ-AS, CA 5786 199 16 1 UPRENET, PR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 435 411 CSTNET-AS-AP Computer Network Information Cente 2018 377 305 TENET-1, ZA 36914 251 248 KENET-AS, KE 5786 199 198 UPRENET, PR 14618 740 189 AMAZON-AES, US 58647 177 175 KAGAWAU-AS Kagawa University, JP 8895 177 173 ISU Internet Services Unit ISU, SA 1916 178 136 Rede Nacional de Ensino e Pesquisa, BR 18558 134 130 NETBLK-RCOEK, US 2907 590 127 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 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 18621 UNALLOCATED 142.156.0.0/16 26677 ORION-ASN, CA 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, 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 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 11537 INTERNET2-RESEARCH-EDU, US 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 Transit: 16509 AMAZON-02, US 216.169.147.0/24 Origin: 14618 AMAZON-AES, US 216.169.147.0/24 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 /10:2 /11:3 /12:17 /13:25 /14:59 /15:174 /16:2071 /17:474 /18:473 /19:607 /20:1001 /21:1025 /22:1695 /23:1778 /24:13182 /25:85 /26:57 /27:152 /28:7 /29:54 /30:0 /31:0 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 491 3183 AMAZON-02, US 14618 246 740 AMAZON-AES, US 36914 238 251 KENET-AS, KE 8895 172 177 ISU Internet Services Unit ISU, SA 32440 79 94 LONI, US 23024 52 113 OCDE, US 1 38 120 LVLT-1, US 46115 32 35 LUTHER, US 200521 31 54 SEAP-AGE, ES 25977 30 44 HCCS, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 3:92 4:2 5:17 6:4 8:2 12:1 13:60 14:89 15:90 16:29 18:93 23:49 24:3 31:7 35:14 37:1 38:9 40:1 41:139 42:10 44:5 45:51 46:10 47:1 49:7 50:8 52:830 54:248 58:2 59:20 60:4 61:3 62:12 63:38 64:150 65:13 66:68 67:63 68:18 69:45 70:27 71:16 72:17 74:82 76:46 77:11 78:3 79:10 80:17 81:28 82:5 83:6 84:12 85:46 86:5 87:2 89:13 91:55 92:2 93:4 94:4 95:2 96:7 97:1 98:13 99:65 101:6 102:16 103:345 104:113 107:1 108:32 109:12 110:2 111:16 114:23 115:1 116:8 117:61 118:32 119:21 121:28 122:11 123:8 124:39 125:4 128:86 129:49 130:143 131:68 132:55 133:149 134:102 135:3 136:216 137:102 138:10 139:18 140:55 141:5 142:55 143:32 144:40 145:2 146:134 147:67 148:204 149:16 150:130 151:14 152:82 153:14 154:30 155:78 156:71 157:40 158:43 159:164 160:32 161:35 162:65 163:89 164:22 165:60 166:1 167:18 168:177 169:14 170:128 171:1 172:10 173:22 174:2 175:32 176:12 177:8 178:1 179:10 180:17 181:1 182:1 184:4 185:75 186:2 187:19 188:15 189:3 190:15 191:36 192:1519 193:357 194:134 195:84 196:164 197:154 198:519 199:334 200:211 201:35 202:638 203:434 204:370 205:160 206:207 207:190 208:119 209:137 210:186 211:18 212:171 213:16 214:8 216:160 217:11 218:22 219:6 220:17 222:5 223:4 End of report