IPv4 R&E Routing Table Report 22:00 GMT Sat 09 Sep, 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: 23253 Prefixes after maximum aggregation (per Origin AS): 12820 Deaggregation factor: 1.81 Unique aggregates announced (without unneeded subnets): 14881 Number of IPv4 prefixes with a valid ROA: 9397 Number of IPv4 prefixes with an invalid ROA: 22 Number of IPv4 prefixes with no ROA: 13834 Total ASes present in the Internet Routing Table: 2749 Prefixes per ASN: 8.46 Origin-only ASes present in the Internet Routing Table: 2371 Origin ASes announcing only one prefix: 1046 Transit ASes present in the Internet Routing Table: 378 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: 3.3 Max AS path length visible: 15 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 3 Number of instances of unregistered ASNs: 3 Number of 32-bit ASNs allocated by the RIRs: 42579 Number of 32-bit ASNs visible in the Routing Table: 632 Prefixes from 32-bit ASNs in the Routing Table: 1937 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: 17 Number of addresses announced to Internet: 241822904 Equivalent to 14 /8s, 105 /16s and 236 /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: 99.5 Total number of prefixes smaller than registry allocations: 3037 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4641 Total APNIC prefixes after maximum aggregation: 2285 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4718 Unique aggregates announced from the APNIC address blocks: 2683 APNIC Region origin ASes present in the Internet Routing Table: 543 APNIC Prefixes per ASN: 8.69 APNIC Region origin ASes announcing only one prefix: 228 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 4.0 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: 45594688 Equivalent to 2 /8s, 183 /16s and 184 /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: 12412 Total ARIN prefixes after maximum aggregation: 6903 ARIN Deaggregation factor: 1.80 Prefixes being announced from the ARIN address blocks: 12189 Unique aggregates announced from the ARIN address blocks: 8081 ARIN Region origin ASes present in the Internet Routing Table: 1240 ARIN Prefixes per ASN: 9.83 ARIN Region origin ASes announcing only one prefix: 429 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 2.9 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 190 Number of ARIN addresses announced to Internet: 131294680 Equivalent to 7 /8s, 211 /16s and 101 /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: 3648 Total RIPE prefixes after maximum aggregation: 2880 RIPE Deaggregation factor: 1.27 Prefixes being announced from the RIPE address blocks: 3775 Unique aggregates announced from the RIPE address blocks: 3091 RIPE Region origin ASes present in the Internet Routing Table: 682 RIPE Prefixes per ASN: 5.54 RIPE Region origin ASes announcing only one prefix: 298 RIPE Region transit ASes present in the Internet Routing Table: 106 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: 57936128 Equivalent to 3 /8s, 116 /16s and 9 /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: 1503 Total LACNIC prefixes after maximum aggregation: 575 LACNIC Deaggregation factor: 2.61 Prefixes being announced from the LACNIC address blocks: 1508 Unique aggregates announced from the LACNIC address blocks: 789 LACNIC Region origin ASes present in the Internet Routing Table: 166 LACNIC Prefixes per ASN: 9.08 LACNIC Region origin ASes announcing only one prefix: 65 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 4.0 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: 4263328 Equivalent to 0 /8s, 65 /16s and 13 /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: 1046 Total AfriNIC prefixes after maximum aggregation: 174 AfriNIC Deaggregation factor: 6.01 Prefixes being announced from the AfriNIC address blocks: 1046 Unique aggregates announced from the AfriNIC address blocks: 220 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 20.92 AfriNIC Region origin ASes announcing only one prefix: 26 AfriNIC Region transit ASes present in the Internet Routing Table: 9 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: 2659840 Equivalent to 0 /8s, 40 /16s and 150 /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 597 2147 466 SINET-AS Research Organization of Infor 7497 435 180 23 CSTNET-AS-AP Computer Network Informati 1237 194 74 139 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 125 18 16 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 63 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 3483 4633 1533 AMAZON-02, US 14618 814 4019 612 AMAZON-AES, US 668 202 651 171 DNIC-AS-00668, US 376 201 178 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2152 148 507 92 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 81 127 521 30 NCREN, US 1 122 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 163 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 74 465 74 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 261 176 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 104 24 48 Red Universitaria Nacional, CL 271640 72 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 59 102 39 Fundacao Carlos Chagas Filho de Amparo 4270 48 16 1 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 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 369 319 71 TENET-1, ZA 36914 252 82 3 KENET-AS, KE 327687 164 28 3 RENU, UG 8094 47 48 18 PUKNET, ZA 327700 41 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 3483 4633 1533 AMAZON-02, US 14618 814 4019 612 AMAZON-AES, US 2907 597 2147 466 SINET-AS Research Organization of Infor 7497 435 180 23 CSTNET-AS-AP Computer Network Informati 2018 369 319 71 TENET-1, ZA 680 283 1903 249 DFN Verein zur Foerderung eines Deutsch 1916 261 176 43 Rede Nacional de Ensino e Pesquisa, BR 36914 252 82 3 KENET-AS, KE 668 202 651 171 DNIC-AS-00668, US 376 201 178 150 RISQ-AS, CA 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 435 412 CSTNET-AS-AP Computer Network Information Cente 2018 369 298 TENET-1, ZA 36914 252 249 KENET-AS, KE 1916 261 218 Rede Nacional de Ensino e Pesquisa, BR 14618 814 202 AMAZON-AES, US 5786 197 196 UPRENET, PR 58647 177 175 KAGAWAU-AS Kagawa University, JP 327687 164 161 RENU, UG 8895 163 158 ISU Internet Services Unit ISU, SA 18558 136 132 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 33008 UNALLOCATED 162.248.66.0/24 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 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 144.81.129.0/24 Origin: 14618 AMAZON-AES, US 144.81.129.0/24 Transit: 16509 AMAZON-02, US 144.81.130.0/24 Origin: 14618 AMAZON-AES, US 144.81.130.0/24 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 /14:58 /15:175 /16:2067 /17:479 /18:459 /19:597 /20:985 /21:1027 /22:1715 /23:1788 /24:13496 /25:86 /26:64 /27:139 /28:8 /29:56 /30:0 /31:0 /32:6 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 518 3483 AMAZON-02, US 14618 265 814 AMAZON-AES, US 36914 241 252 KENET-AS, KE 8895 158 163 ISU Internet Services Unit ISU, SA 32440 80 109 LONI, US 23024 52 113 OCDE, US 1 40 122 LVLT-1, US 1916 40 261 Rede Nacional de Ensino e Pesquisa, BR 327700 36 41 MoRENet, MZ 200521 33 56 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:104 4:2 5:20 6:4 8:2 12:1 13:59 14:89 15:97 16:112 18:107 23:47 24:3 31:7 34:2 35:13 38:9 40:1 41:115 42:10 44:8 45:63 46:10 47:1 49:9 50:10 52:846 54:248 58:2 59:19 60:4 61:3 62:12 63:37 64:153 65:13 66:78 67:63 68:20 69:46 70:26 71:16 72:17 74:71 76:48 77:11 78:3 79:10 80:12 81:27 82:6 83:6 84:14 85:44 86:10 87:2 88:1 89:13 91:56 92:2 93:4 94:4 95:2 96:7 97:1 98:13 99:66 101:2 102:29 103:298 104:115 107:1 108:33 109:11 111:16 114:23 115:1 116:10 117:61 118:32 119:18 121:28 122:11 123:8 124:39 125:4 128:87 129:51 130:148 131:67 132:57 133:152 134:108 135:2 136:213 137:144 138:13 139:18 140:43 141:5 142:57 143:29 144:40 145:3 146:132 147:65 148:203 149:17 150:44 151:23 152:151 153:14 154:29 155:83 156:71 157:29 158:40 159:165 160:35 161:41 162:65 163:94 164:22 165:57 166:2 167:21 168:170 169:12 170:155 171:1 172:12 173:26 174:2 175:26 176:12 177:5 178:1 179:13 180:15 181:1 182:1 184:6 185:83 186:3 187:17 188:15 189:3 190:19 191:13 192:1528 193:309 194:132 195:82 196:199 197:166 198:505 199:330 200:340 201:38 202:644 203:438 204:382 205:157 206:212 207:201 208:116 209:147 210:190 211:14 212:169 213:16 214:8 216:169 217:10 218:22 219:5 220:16 222:2 223:14 End of report