IPv4 R&E Routing Table Report 22:20 GMT Thu 22 Dec, 2022 IPv4 BGP Table (R&E) as seen at ESnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 20551 Prefixes after maximum aggregation (per Origin AS): 12017 Deaggregation factor: 1.71 Unique aggregates announced (without unneeded subnets): 13546 Number of IPv4 prefixes with a valid ROA: 5047 Number of IPv4 prefixes with an invalid ROA: 66 Number of IPv4 prefixes with no ROA: 15438 Total ASes present in the Internet Routing Table: 3031 Prefixes per ASN: 6.78 Origin-only ASes present in the Internet Routing Table: 2622 Origin ASes announcing only one prefix: 1166 Transit ASes present in the Internet Routing Table: 409 Transit-only ASes present in the Internet Routing Table: 79 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.8 Max AS path length visible: 19 Max AS path prepend of ASN ( 53263) 11 Prefixes from unregistered ASNs in the Routing Table: 11 Number of instances of unregistered ASNs: 11 Number of 32-bit ASNs allocated by the RIRs: 40958 Number of 32-bit ASNs visible in the Routing Table: 689 Prefixes from 32-bit ASNs in the Routing Table: 1960 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 1 Number of addresses announced to Internet: 181272320 Equivalent to 10 /8s, 205 /16s and 255 /24s Percentage of available address space announced: 4.9 Percentage of allocated address space announced: 4.9 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: 2657 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4569 Total APNIC prefixes after maximum aggregation: 2255 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4571 Unique aggregates announced from the APNIC address blocks: 2620 APNIC Region origin ASes present in the Internet Routing Table: 564 APNIC Prefixes per ASN: 8.10 APNIC Region origin ASes announcing only one prefix: 246 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 216 Number of APNIC addresses announced to Internet: 36023296 Equivalent to 2 /8s, 37 /16s and 172 /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: 10167 Total ARIN prefixes after maximum aggregation: 6226 ARIN Deaggregation factor: 1.63 Prefixes being announced from the ARIN address blocks: 10033 Unique aggregates announced from the ARIN address blocks: 6930 ARIN Region origin ASes present in the Internet Routing Table: 1515 ARIN Prefixes per ASN: 6.62 ARIN Region origin ASes announcing only one prefix: 545 ARIN Region transit ASes present in the Internet Routing Table: 204 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 19 Number of ARIN region 32-bit ASNs visible in the Routing Table: 245 Number of ARIN addresses announced to Internet: 84197632 Equivalent to 5 /8s, 4 /16s and 193 /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: 3466 Total RIPE prefixes after maximum aggregation: 2790 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3610 Unique aggregates announced from the RIPE address blocks: 2991 RIPE Region origin ASes present in the Internet Routing Table: 664 RIPE Prefixes per ASN: 5.44 RIPE Region origin ASes announcing only one prefix: 297 RIPE Region transit ASes present in the Internet Routing Table: 93 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: 137 Number of RIPE addresses announced to Internet: 54338304 Equivalent to 3 /8s, 61 /16s and 35 /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: 1404 Total LACNIC prefixes after maximum aggregation: 571 LACNIC Deaggregation factor: 2.46 Prefixes being announced from the LACNIC address blocks: 1402 Unique aggregates announced from the LACNIC address blocks: 781 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 8.87 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 67 Number of LACNIC addresses announced to Internet: 4137472 Equivalent to 0 /8s, 63 /16s and 34 /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: 934 Total AfriNIC prefixes after maximum aggregation: 167 AfriNIC Deaggregation factor: 5.59 Prefixes being announced from the AfriNIC address blocks: 934 Unique aggregates announced from the AfriNIC address blocks: 223 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 20.76 AfriNIC Region origin ASes announcing only one prefix: 20 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24 Number of AfriNIC addresses announced to Internet: 2575360 Equivalent to 0 /8s, 39 /16s and 76 /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 571 2156 457 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 1237 184 74 133 KREONET-AS-KR KISTI, KR 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 171 329 118 AARNET-AS-AP Australian Academic and Re 55824 114 18 11 NKN-CORE-NW NKN Core Network, IN 4538 111 2368 69 ERX-CERNET-BKB China Education and Rese 4621 69 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/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 219 718 176 DNIC-AS-00668, US 376 200 178 149 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 16509 189 14 103 AMAZON-02, US 18530 162 28 129 ISOMEDIA-1, US 2152 149 507 93 CSUNET-NW, US 18558 134 18 4 NETBLK-RCOEK, US 11404 129 177 105 AS-WAVE-1, US 270 118 329 87 AS270, US 23024 113 7 17 OCDE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 281 1935 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 8895 133 24 3 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 99 1264 86 SURFNET-NL SURFnet, The Netherlands, NL 2614 95 27 75 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 63 599 58 FR-RENATER Reseau National de telecommu Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 1916 151 207 39 Rede Nacional de Ensino e Pesquisa, BR 11340 97 24 55 Red Universitaria Nacional, CL 1251 64 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 42 3 15 CEDIA, EC 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/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 371 319 71 TENET-1, ZA 36914 237 82 3 KENET-AS, KE 8094 48 48 15 PUKNET, ZA 327687 41 28 3 RENU, UG 327700 35 16 1 MoRENet, MZ 37182 33 8 1 TERNET, TZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 571 2156 457 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 2018 371 319 71 TENET-1, ZA 680 281 1935 249 DFN Verein zur Foerderung eines Deutsch 36914 237 82 3 KENET-AS, KE 668 219 718 176 DNIC-AS-00668, US 376 200 178 149 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 16509 189 14 103 AMAZON-02, US 786 186 1775 183 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 434 410 CSTNET-AS-AP Computer Network Information Cente 2018 371 300 TENET-1, ZA 36914 237 234 KENET-AS, KE 5786 199 198 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 18558 134 130 NETBLK-RCOEK, US 8895 133 130 ISU Internet Services Unit ISU, SA 1916 151 112 Rede Nacional de Ensino e Pesquisa, BR 55824 114 103 NKN-CORE-NW NKN Core Network, IN 2920 108 101 LACOE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 17040 UNALLOCATED 192.251.219.0/24 11404 AS-WAVE-1, US 17040 UNALLOCATED 192.251.220.0/24 11404 AS-WAVE-1, US 17040 UNALLOCATED 192.251.221.0/24 11404 AS-WAVE-1, US 17040 UNALLOCATED 192.251.222.0/24 11404 AS-WAVE-1, US 17040 UNALLOCATED 192.251.223.0/24 11404 AS-WAVE-1, US 17040 UNALLOCATED 192.251.224.0/24 11404 AS-WAVE-1, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/ESnet/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 293 ESNET, US Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0 /13:0 /14:36 /15:122 /16:2050 /17:442 /18:460 /19:619 /20:955 /21:990 /22:1682 /23:1767 /24:11428 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 224 237 KENET-AS, KE 8895 128 133 ISU Internet Services Unit ISU, SA 18530 56 162 ISOMEDIA-1, US 23024 52 113 OCDE, US 19194 43 45 JOVITA, US 30041 42 52 RACE, US 18632 34 65 VOLCANO-VISION, US 16713 33 56 NOANET-WA, US 32440 32 47 LONI, US 37182 32 33 TERNET, TZ Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 5:15 6:4 8:6 12:1 14:85 15:5 18:43 23:53 24:7 31:8 35:12 37:4 38:27 40:1 41:144 42:10 44:7 45:50 46:6 47:1 49:10 50:10 52:21 58:1 59:20 60:4 61:3 62:7 63:89 64:109 65:23 66:73 67:67 68:18 69:53 70:3 71:2 72:23 74:65 76:46 77:7 78:3 79:10 80:17 81:28 82:7 83:6 84:5 85:42 86:2 87:7 88:1 89:10 91:41 92:1 93:6 94:6 95:4 96:5 97:3 98:10 101:6 102:9 103:300 104:111 107:32 108:9 109:7 110:4 111:16 114:23 115:1 116:8 117:61 118:32 119:23 121:26 122:8 123:8 124:39 125:4 128:86 129:47 130:90 131:63 132:61 133:147 134:100 135:1 136:206 137:78 138:9 139:7 140:55 141:4 142:52 143:30 144:25 145:2 146:223 147:69 148:194 149:12 150:132 151:10 152:82 153:14 154:28 155:70 156:69 157:34 158:44 159:162 160:30 161:62 162:49 163:76 164:11 165:51 166:3 167:17 168:135 169:14 170:90 172:6 173:15 174:10 175:31 177:10 179:10 180:17 181:1 182:6 184:3 185:47 186:3 187:19 188:14 189:3 190:18 191:36 192:1543 193:299 194:131 195:56 196:161 197:141 198:578 199:352 200:230 201:37 202:609 203:434 204:404 205:146 206:219 207:185 208:122 209:141 210:178 211:13 212:168 213:5 214:8 216:124 217:11 218:22 219:6 220:16 222:5 223:4 End of report