IPv4 R&E Routing Table Report 22:00 GMT Sat 04 Nov, 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: 23445 Prefixes after maximum aggregation (per Origin AS): 12910 Deaggregation factor: 1.82 Unique aggregates announced (without unneeded subnets): 14996 Number of IPv4 prefixes with a valid ROA: 9623 Number of IPv4 prefixes with an invalid ROA: 23 Number of IPv4 prefixes with no ROA: 13799 Total ASes present in the Internet Routing Table: 2765 Prefixes per ASN: 8.48 Origin-only ASes present in the Internet Routing Table: 2391 Origin ASes announcing only one prefix: 1058 Transit ASes present in the Internet Routing Table: 374 Transit-only ASes present in the Internet Routing Table: 67 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: 14 Max AS path prepend of ASN ( 47805) 11 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: 43008 Number of 32-bit ASNs visible in the Routing Table: 639 Prefixes from 32-bit ASNs in the Routing Table: 1949 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: 12 Number of addresses announced to Internet: 242249048 Equivalent to 14 /8s, 112 /16s and 109 /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: 3016 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4646 Total APNIC prefixes after maximum aggregation: 2282 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4727 Unique aggregates announced from the APNIC address blocks: 2678 APNIC Region origin ASes present in the Internet Routing Table: 539 APNIC Prefixes per ASN: 8.77 APNIC Region origin ASes announcing only one prefix: 225 APNIC Region transit ASes present in the Internet Routing Table: 60 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 205 Number of APNIC addresses announced to Internet: 45596992 Equivalent to 2 /8s, 183 /16s and 193 /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: 12612 Total ARIN prefixes after maximum aggregation: 6986 ARIN Deaggregation factor: 1.81 Prefixes being announced from the ARIN address blocks: 12387 Unique aggregates announced from the ARIN address blocks: 8202 ARIN Region origin ASes present in the Internet Routing Table: 1250 ARIN Prefixes per ASN: 9.91 ARIN Region origin ASes announcing only one prefix: 437 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: 13 Number of ARIN region 32-bit ASNs visible in the Routing Table: 192 Number of ARIN addresses announced to Internet: 131791224 Equivalent to 7 /8s, 218 /16s and 249 /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: 3663 Total RIPE prefixes after maximum aggregation: 2900 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3792 Unique aggregates announced from the RIPE address blocks: 3114 RIPE Region origin ASes present in the Internet Routing Table: 693 RIPE Prefixes per ASN: 5.47 RIPE Region origin ASes announcing only one prefix: 307 RIPE Region transit ASes present in the Internet Routing Table: 103 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: 148 Number of RIPE addresses announced to Internet: 57992960 Equivalent to 3 /8s, 116 /16s and 231 /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: 1461 Total LACNIC prefixes after maximum aggregation: 568 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1466 Unique aggregates announced from the LACNIC address blocks: 767 LACNIC Region origin ASes present in the Internet Routing Table: 164 LACNIC Prefixes per ASN: 8.94 LACNIC Region origin ASes announcing only one prefix: 62 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 68 Number of LACNIC addresses announced to Internet: 4132768 Equivalent to 0 /8s, 63 /16s and 15 /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: 1061 Total AfriNIC prefixes after maximum aggregation: 172 AfriNIC Deaggregation factor: 6.17 Prefixes being announced from the AfriNIC address blocks: 1061 Unique aggregates announced from the AfriNIC address blocks: 223 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 20.80 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 2.8 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2665216 Equivalent to 0 /8s, 40 /16s and 171 /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 598 2162 466 SINET-AS Research Organization of Infor 7497 437 180 23 CSTNET-AS-AP Computer Network Informati 1237 196 74 142 KREONET-AS-KR KISTI, KR 7575 177 329 120 AARNET-AS-AP Australian Academic and Re 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 127 19 17 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T 4621 71 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart 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 3574 4649 1582 AMAZON-02, US 14618 827 4022 621 AMAZON-AES, US 376 202 178 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 668 189 635 162 DNIC-AS-00668, US 2152 142 507 91 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 81 127 521 30 NCREN, US 1 124 2 46 LVLT-1, US 270 118 329 82 AS270, 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 1903 249 DFN Verein zur Foerderung eines Deutsch 786 185 1767 182 JANET Jisc Services Limited, GB 8895 159 24 5 ISU Internet Services Unit ISU, SA 559 113 533 105 SWITCH Peering requests: peering@switch 1103 94 1502 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 76 462 76 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 249 176 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 105 24 49 Red Universitaria Nacional, CL 271640 70 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 50 17 3 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 2715 44 99 34 Fundacao Carlos Chagas Filho de Amparo 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 3596 35 4 3 Universidad Autonoma Metropolitana, MX 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 380 319 71 TENET-1, ZA 36914 249 82 3 KENET-AS, KE 327687 165 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 42 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 14 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 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 3574 4649 1582 AMAZON-02, US 14618 827 4022 621 AMAZON-AES, US 2907 598 2162 466 SINET-AS Research Organization of Infor 7497 437 180 23 CSTNET-AS-AP Computer Network Informati 2018 380 319 71 TENET-1, ZA 680 283 1903 249 DFN Verein zur Foerderung eines Deutsch 1916 249 176 43 Rede Nacional de Ensino e Pesquisa, BR 36914 249 82 3 KENET-AS, KE 376 202 178 151 RISQ-AS, CA 5786 197 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 437 414 CSTNET-AS-AP Computer Network Information Cente 2018 380 309 TENET-1, ZA 36914 249 246 KENET-AS, KE 14618 827 206 AMAZON-AES, US 1916 249 206 Rede Nacional de Ensino e Pesquisa, BR 5786 197 196 UPRENET, PR 58647 177 175 KAGAWAU-AS Kagawa University, JP 327687 165 162 RENU, UG 8895 159 154 ISU Internet Services Unit ISU, SA 18558 141 137 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 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, 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 45.42.252.0/22 Origin: 16509 AMAZON-02, US 45.42.252.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, US 64.186.3.0/24 Origin: 16509 AMAZON-02, US 64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US 134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW 134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo 170.39.88.0/24 Origin: 14618 AMAZON-AES, US 170.39.88.0/24 Transit: 16509 AMAZON-02, US 173.249.168.0/22 Origin: 16509 AMAZON-02, US 173.249.168.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, 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 /14:58 /15:175 /16:2080 /17:489 /18:484 /19:622 /20:999 /21:1043 /22:1739 /23:1804 /24:13554 /25:83 /26:60 /27:134 /28:8 /29:58 /30:0 /31:0 /32:7 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 528 3574 AMAZON-02, US 14618 262 827 AMAZON-AES, US 36914 238 249 KENET-AS, KE 8895 154 159 ISU Internet Services Unit ISU, SA 32440 81 111 LONI, US 23024 52 113 OCDE, US 1 42 124 LVLT-1, US 1916 40 249 Rede Nacional de Ensino e Pesquisa, BR 327700 37 42 MoRENet, MZ 28614 32 38 Fundacao Universidade Regional de Blumenau, BR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:115 4:2 5:20 6:4 8:2 12:1 13:60 14:89 15:99 16:115 18:114 23:47 24:3 31:7 34:2 35:17 38:8 40:6 41:119 42:10 44:9 45:61 46:11 47:1 49:9 50:10 52:846 54:248 58:2 59:19 60:5 61:3 62:12 63:36 64:149 65:12 66:80 67:64 68:21 69:44 70:27 71:16 72:17 74:76 76:49 77:11 78:3 79:10 80:12 81:26 82:7 83:6 84:14 85:42 86:4 87:2 88:1 89:15 91:57 92:2 93:4 94:4 95:2 96:7 97:1 98:13 99:67 101:2 102:31 103:308 104:117 107:1 108:35 109:11 111:16 114:23 115:1 116:10 117:61 118:32 119:18 121:28 122:11 123:8 124:40 125:4 128:88 129:56 130:147 131:73 132:64 133:152 134:112 135:2 136:213 137:145 138:13 139:19 140:45 141:8 142:56 143:29 144:40 145:3 146:133 147:66 148:204 149:17 150:44 151:25 152:137 153:14 154:29 155:83 156:69 157:29 158:42 159:165 160:36 161:36 162:66 163:93 164:25 165:58 166:2 167:21 168:180 169:12 170:156 171:1 172:12 173:28 174:2 175:18 176:12 177:6 178:1 179:13 180:15 181:1 182:1 184:3 185:84 186:3 187:17 188:15 189:3 190:19 191:13 192:1554 193:314 194:138 195:86 196:200 197:163 198:506 199:320 200:320 201:38 202:638 203:438 204:382 205:157 206:215 207:187 208:121 209:140 210:192 211:14 212:162 213:16 214:5 216:167 217:11 218:22 219:5 220:16 222:2 223:14 End of report