Global R&E Routing Table Report 22:05 GMT Sun 12 Sep, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/ Analysis Summary ---------------- BGP routing table entries examined: 21894 Prefixes after maximum aggregation (per Origin AS): 9139 Deaggregation factor: 2.40 Unique aggregates announced (without unneeded subnets): 8520 Total ASes present in the Internet Routing Table: 2764 Prefixes per ASN: 7.92 Origin-only ASes present in the Internet Routing Table: 2369 Origin ASes announcing only one prefix: 1093 Transit ASes present in the Internet Routing Table: 395 Transit-only ASes present in the Internet Routing Table: 63 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 15 Max AS path prepend of ASN ( 10497) 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: 37207 Number of 32-bit ASNs visible in the Routing Table: 595 Prefixes from 32-bit ASNs in the Routing Table: 1754 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1003 Prefixes being announced from unallocated address space: 10 Number of addresses announced to Internet: 172230400 Equivalent to 10 /8s, 68 /16s and 7 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 4.7 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: 8820 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4667 Total APNIC prefixes after maximum aggregation: 1432 APNIC Deaggregation factor: 3.26 Prefixes being announced from the APNIC address blocks: 1896 Unique aggregates announced from the APNIC address blocks: 808 APNIC Region origin ASes present in the Internet Routing Table: 573 APNIC Prefixes per ASN: 3.31 APNIC Region origin ASes announcing only one prefix: 241 APNIC Region transit ASes present in the Internet Routing Table: 61 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: 217 Number of APNIC addresses announced to Internet: 25716480 Equivalent to 1 /8s, 136 /16s and 103 /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, 131072-147769 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: 11536 Total ARIN prefixes after maximum aggregation: 4577 ARIN Deaggregation factor: 2.52 Prefixes being announced from the ARIN address blocks: 11769 Unique aggregates announced from the ARIN address blocks: 3891 ARIN Region origin ASes present in the Internet Routing Table: 1254 ARIN Prefixes per ASN: 9.39 ARIN Region origin ASes announcing only one prefix: 451 ARIN Region transit ASes present in the Internet Routing Table: 169 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 158 Number of ARIN addresses announced to Internet: 103800064 Equivalent to 6 /8s, 47 /16s and 221 /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: 3288 Total RIPE prefixes after maximum aggregation: 2534 RIPE Deaggregation factor: 1.30 Prefixes being announced from the RIPE address blocks: 7060 Unique aggregates announced from the RIPE address blocks: 3670 RIPE Region origin ASes present in the Internet Routing Table: 642 RIPE Prefixes per ASN: 11.00 RIPE Region origin ASes announcing only one prefix: 308 RIPE Region transit ASes present in the Internet Routing Table: 106 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 121 Number of RIPE addresses announced to Internet: 32576512 Equivalent to 1 /8s, 241 /16s and 20 /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: 1489 Total LACNIC prefixes after maximum aggregation: 403 LACNIC Deaggregation factor: 3.69 Prefixes being announced from the LACNIC address blocks: 2 Unique aggregates announced from the LACNIC address blocks: 2 LACNIC Region origin ASes present in the Internet Routing Table: 177 LACNIC Prefixes per ASN: 0.01 LACNIC Region origin ASes announcing only one prefix: 69 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 72 Number of LACNIC addresses announced to Internet: 131072 Equivalent to 0 /8s, 2 /16s and 0 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-272796 + 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: 903 Total AfriNIC prefixes after maximum aggregation: 188 AfriNIC Deaggregation factor: 4.80 Prefixes being announced from the AfriNIC address blocks: 154 Unique aggregates announced from the AfriNIC address blocks: 137 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 3.02 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 13 Average AfriNIC Region AS path length visible: 4.1 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27 Number of AfriNIC addresses announced to Internet: 9756672 Equivalent to 0 /8s, 148 /16s and 224 /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 608 2000 195 SINET-AS Research Organization of Infor 7497 433 116 7 CSTNET-AS-AP Computer Network Informati 1237 185 33 3 KREONET-AS-KR KISTI, KR 7575 180 316 56 AARNET-AS-AP Australian Academic and Re 58647 164 16 1 KAGAWAU-AS Kagawa University, JP 55824 129 18 19 NKN-CORE-NW NKN Core Network, IN 4538 124 1394 38 ERX-CERNET-BKB China Education and Rese 4621 81 3 6 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2310 825 336 AMAZON-02, US 14618 492 336 171 AMAZON-AES, US 7896 241 50 5 NU-AS, US 376 234 163 32 RISQ-AS, CA 8075 198 1340 71 MICROSOFT-CORP-MSN-AS-BLOCK, US 5786 195 16 1 UPRENET, PR 668 188 537 136 DNIC-AS-00668, US 2152 159 404 48 CSUNET-NW, US 18558 137 18 4 NETBLK-RCOEK, US 270 119 329 88 AS270, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 275 1979 234 DFN Verein zur Foerderung eines Deutsch 786 186 1721 178 JANET Jisc Services Limited, GB 8895 142 0 2 ISU Internet Services Unit ISU, SA 559 116 550 107 SWITCH Peering requests: peering@switch 1103 97 1520 84 SURFNET-NL SURFnet, The Netherlands, NL 137 82 653 75 ASGARR Consortium GARR, IT 553 72 449 72 BELWUE BelWue-Koordination, DE 2200 66 647 61 FR-RENATER Reseau National de telecommu 2614 61 28 36 ROEDUNET, RO 1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 178 81 7 Associacao Rede Nacional de Ensino e Pe 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 90 21 49 Red Universitaria Nacional, CL 1251 65 12 2 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 69 32 Fundacao Carlos Chagas Filho de Amparo 19611 44 16 1 Associacao Antonio Vieira - Unisinos, B 4270 43 16 1 Red de Interconexion Universitaria, AR 61468 41 2 11 CEDIA, EC 28614 38 1 1 Fundacao Universidade Regional de Blume 28571 37 16 1 UNIVERSIDADE DE SAO PAULO, BR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 337 319 74 TENET-1, ZA 327687 134 28 3 RENU, UG 36914 100 82 3 KENET-AS, KE 2561 72 5 31 EUN, EG 8094 55 48 4 PUKNET, ZA 327700 35 16 1 MoRENet, MZ 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37182 14 8 1 TERNET, TZ 37074 11 8 2 UG-AS, GH Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2310 825 336 AMAZON-02, US 2907 608 2000 195 SINET-AS Research Organization of Infor 14618 492 336 171 AMAZON-AES, US 7497 433 116 7 CSTNET-AS-AP Computer Network Informati 2018 337 319 74 TENET-1, ZA 680 275 1979 234 DFN Verein zur Foerderung eines Deutsch 7896 241 50 5 NU-AS, US 376 234 163 32 RISQ-AS, CA 8075 198 1340 71 MICROSOFT-CORP-MSN-AS-BLOCK, US 5786 195 16 1 UPRENET, PR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 433 426 CSTNET-AS-AP Computer Network Information Cente 2907 608 413 SINET-AS Research Organization of Information a 14618 492 321 AMAZON-AES, US 2018 337 263 TENET-1, ZA 7896 241 236 NU-AS, US 376 234 202 RISQ-AS, CA 5786 195 194 UPRENET, PR 1237 185 182 KREONET-AS-KR KISTI, KR 1916 178 171 Associacao Rede Nacional de Ensino e Pesquisa, 58647 164 163 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 19658 UNALLOCATED 5.205.131.0/24 11096 FLORIDANET, US 14822 UNALLOCATED 40.163.0.0/16 10466 MAGPI, US 14822 UNALLOCATED 40.163.0.0/17 10466 MAGPI, US 14822 UNALLOCATED 40.163.6.0/24 10466 MAGPI, US 14822 UNALLOCATED 40.163.64.0/24 10466 MAGPI, US 14822 UNALLOCATED 40.163.70.0/24 10466 MAGPI, US 14822 UNALLOCATED 40.163.128.0/17 10466 MAGPI, US 22063 UNALLOCATED 53.10.0.0/16 2152 CSUNET-NW, US 394784 UNALLOCATED 92.107.242.0/24 40831 PHS, US 19658 UNALLOCATED 99.27.241.0/24 11096 FLORIDANET, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 0.0.0.0/11 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.33.0.0/16 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.34.0.0/15 8070 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.36.0.0/14 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.40.0.0/13 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.48.0.0/12 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.64.0.0/10 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.135.0.0/16 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.136.0.0/16 8075 MICROSOFT-CORP-MSN-AS-BLOCK, US 0.140.0.0/15 8070 MICROSOFT-CORP-MSN-AS-BLOCK, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.136.65.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG 23.136.65.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 23.136.66.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG 23.136.66.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 23.136.67.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG 23.136.67.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 23.136.68.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG 23.136.68.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 23.136.69.0/24 Origin: 23767 A-STAR-AS-AP A-STAR, SG 23.136.69.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re Complete listing at https://bgp.nsrc.org/REN/CENIC/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 /10:4 /11:7 /12:18 /13:32 /14:76 /15:188 /16:2146 /17:446 /18:466 /19:609 /20:957 /21:988 /22:1555 /23:1686 /24:12715 /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 16509 1078 2310 AMAZON-02, US 2907 330 608 SINET-AS Research Organization of Information a 7497 244 433 CSTNET-AS-AP Computer Network Information Cente 2018 240 337 TENET-1, ZA 1916 167 178 Associacao Rede Nacional de Ensino e Pesquisa, 14618 156 492 AMAZON-AES, US 680 138 275 DFN Verein zur Foerderung eines Deutschen Forsc 327687 129 134 RENU, UG 1237 104 185 KREONET-AS-KR KISTI, KR 270 94 119 AS270, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:291 2:1311 3:1060 4:901 5:473 6:464 7:292 8:198 9:424 10:189 11:35 12:176 13:14 14:30 16:117 17:76 18:57 19:26 20:16 21:26 22:16 23:10 24:39 25:5 28:81 29:181 30:111 31:108 32:60 33:138 34:97 35:1 36:199 37:152 38:11 39:16 40:51 41:3 42:61 43:41 44:65 46:123 47:65 48:199 49:16 50:47 51:8 52:77 53:11 54:25 55:59 56:66 57:29 58:48 59:120 60:32 61:20 62:53 63:71 64:48 65:60 66:1 67:21 68:168 69:10 70:114 71:1 72:10 73:24 74:1 75:32 76:12 77:10 78:3 79:12 80:21 81:11 82:6 84:7 85:56 86:3 87:18 88:13 89:5 90:48 91:36 92:1500 93:252 94:121 95:87 96:173 97:5 98:535 99:310 End of report