IPv4 R&E Routing Table Report 22:20 GMT Sun 09 Jul, 2023 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: 20107 Prefixes after maximum aggregation (per Origin AS): 11547 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 12920 Number of IPv4 prefixes with a valid ROA: 5370 Number of IPv4 prefixes with an invalid ROA: 48 Number of IPv4 prefixes with no ROA: 14689 Total ASes present in the Internet Routing Table: 2940 Prefixes per ASN: 6.84 Origin-only ASes present in the Internet Routing Table: 2533 Origin ASes announcing only one prefix: 1124 Transit ASes present in the Internet Routing Table: 407 Transit-only ASes present in the Internet Routing Table: 80 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 (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 12 Number of instances of unregistered ASNs: 12 Number of 32-bit ASNs allocated by the RIRs: 42272 Number of 32-bit ASNs visible in the Routing Table: 662 Prefixes from 32-bit ASNs in the Routing Table: 2029 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: 3 Number of addresses announced to Internet: 178972416 Equivalent to 10 /8s, 170 /16s and 231 /24s Percentage of available address space announced: 4.8 Percentage of allocated address space announced: 4.8 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: 2602 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4464 Total APNIC prefixes after maximum aggregation: 2176 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4449 Unique aggregates announced from the APNIC address blocks: 2517 APNIC Region origin ASes present in the Internet Routing Table: 511 APNIC Prefixes per ASN: 8.71 APNIC Region origin ASes announcing only one prefix: 214 APNIC Region transit ASes present in the Internet Routing Table: 56 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 186 Number of APNIC addresses announced to Internet: 35700736 Equivalent to 2 /8s, 32 /16s and 192 /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: 9684 Total ARIN prefixes after maximum aggregation: 5876 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 9653 Unique aggregates announced from the ARIN address blocks: 6545 ARIN Region origin ASes present in the Internet Routing Table: 1487 ARIN Prefixes per ASN: 6.49 ARIN Region origin ASes announcing only one prefix: 542 ARIN Region transit ASes present in the Internet Routing Table: 199 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: 249 Number of ARIN addresses announced to Internet: 82406144 Equivalent to 4 /8s, 233 /16s and 107 /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: 3443 Total RIPE prefixes after maximum aggregation: 2764 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3502 Unique aggregates announced from the RIPE address blocks: 2886 RIPE Region origin ASes present in the Internet Routing Table: 654 RIPE Prefixes per ASN: 5.35 RIPE Region origin ASes announcing only one prefix: 287 RIPE Region transit ASes present in the Internet Routing Table: 102 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: 136 Number of RIPE addresses announced to Internet: 54263808 Equivalent to 3 /8s, 60 /16s and 0 /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: 1432 Total LACNIC prefixes after maximum aggregation: 557 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1429 Unique aggregates announced from the LACNIC address blocks: 753 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 9.04 LACNIC Region origin ASes announcing only one prefix: 57 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 66 Number of LACNIC addresses announced to Internet: 4055296 Equivalent to 0 /8s, 61 /16s and 225 /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: 1072 Total AfriNIC prefixes after maximum aggregation: 164 AfriNIC Deaggregation factor: 6.54 Prefixes being announced from the AfriNIC address blocks: 1071 Unique aggregates announced from the AfriNIC address blocks: 216 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 23.28 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2541568 Equivalent to 0 /8s, 38 /16s and 200 /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 584 2143 456 SINET-AS Research Organization of Infor 7497 434 180 23 CSTNET-AS-AP Computer Network Informati 1237 186 74 137 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 176 329 120 AARNET-AS-AP Australian Academic and Re 55824 118 18 11 NKN-CORE-NW NKN Core Network, IN 4538 112 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 668 217 636 180 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 179 16 1 UPRENET, PR 18530 161 27 128 ISOMEDIA-1, US 2152 139 507 94 CSUNET-NW, US 11404 134 178 106 AS-WAVE-1, US 18558 134 18 4 NETBLK-RCOEK, US 81 127 473 32 NCREN, US 270 115 329 84 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 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 8895 136 24 4 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 2614 94 27 74 ROEDUNET, RO 1103 93 1246 82 SURFNET-NL SURFnet, The Netherlands, NL 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/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 219 192 42 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 103 24 47 Red Universitaria Nacional, CL 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 1251 56 36 15 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 48 16 1 Red de Interconexion Universitaria, AR 61468 42 3 14 CEDIA, EC 28571 40 39 18 UNIVERSIDADE DE SAO PAULO, BR 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 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 369 319 71 TENET-1, ZA 36914 257 82 3 KENET-AS, KE 327687 165 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 40 16 1 MoRENet, MZ 37215 37 8 1 MAREN, MW 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 584 2143 456 SINET-AS Research Organization of Infor 7497 434 180 23 CSTNET-AS-AP Computer Network Informati 2018 369 319 71 TENET-1, ZA 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 257 82 3 KENET-AS, KE 1916 219 192 42 Rede Nacional de Ensino e Pesquisa, BR 668 217 636 180 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 786 186 1767 183 JANET Jisc Services Limited, GB 1237 186 74 137 KREONET-AS-KR KISTI, KR 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 434 411 CSTNET-AS-AP Computer Network Information Cente 2018 369 298 TENET-1, ZA 36914 257 254 KENET-AS, KE 5786 179 178 UPRENET, PR 1916 219 177 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 327687 165 162 RENU, UG 8895 136 132 ISU Internet Services Unit ISU, SA 18558 134 130 NETBLK-RCOEK, US 55824 118 107 NKN-CORE-NW NKN Core Network, IN 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 29867 UNALLOCATED 64.202.80.0/20 22742 CT-EDU-NET, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 29867 UNALLOCATED 192.160.243.0/24 22742 CT-EDU-NET, US 29867 UNALLOCATED 192.160.244.0/24 22742 CT-EDU-NET, US 19176 UNALLOCATED 206.174.131.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.140.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.141.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.142.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.144.0/24 32278 GETWIRELESS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 64.202.80.0/20 Origin: 29867 UNASSIGNED 64.202.80.0/20 Transit: 22742 CT-EDU-NET, US 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 293 ESNET, US 202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU 202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 /14:35 /15:122 /16:2027 /17:443 /18:453 /19:609 /20:924 /21:966 /22:1666 /23:1750 /24:11112 /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 245 257 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 30041 56 66 RACE, US 18530 55 161 ISOMEDIA-1, US 23024 52 113 OCDE, US 19194 43 45 JOVITA, US 18632 34 66 VOLCANO-VISION, US 32440 34 49 LONI, US 327700 34 40 MoRENet, MZ 16713 33 56 NOANET-WA, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 6:4 8:6 12:1 14:89 18:42 23:43 24:7 31:8 35:4 37:3 38:26 40:1 41:144 42:10 44:7 45:47 46:6 47:1 49:9 50:9 52:3 58:1 59:19 60:4 61:3 62:7 63:89 64:104 65:22 66:64 67:57 68:18 69:48 70:3 71:1 72:30 74:60 76:48 77:9 78:3 79:10 80:13 81:26 82:5 83:6 84:5 85:41 86:7 87:6 89:10 91:43 92:1 93:6 94:6 95:2 97:3 98:4 101:2 102:29 103:224 104:109 107:30 108:9 109:6 111:16 114:23 116:6 117:61 118:32 119:18 121:27 122:8 123:8 124:38 125:4 128:87 129:45 130:89 131:55 132:61 133:154 134:105 136:183 137:135 138:9 139:5 140:54 141:2 142:51 143:29 144:28 145:2 146:198 147:66 148:161 149:12 150:42 151:14 152:141 153:14 154:31 155:63 156:67 157:22 158:39 159:115 160:30 161:63 162:47 163:78 164:10 165:46 166:3 167:14 168:131 169:8 170:83 172:6 173:8 174:8 175:27 177:6 179:12 180:15 181:1 182:1 184:3 185:54 186:3 187:19 188:14 189:3 190:18 191:13 192:1515 193:288 194:123 195:60 196:200 197:163 198:563 199:339 200:308 201:39 202:613 203:432 204:404 205:144 206:221 207:179 208:119 209:140 210:175 211:2 212:168 213:5 214:8 216:119 217:11 218:22 219:6 220:17 222:2 223:4 End of report