[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Tue Jun 7 20:10:40 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Tue 07 Jun, 2022
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17087
Prefixes after maximum aggregation (per Origin AS): 9883
Deaggregation factor: 1.73
Unique aggregates announced (without unneeded subnets): 11082
Number of IPv4 prefixes with a valid ROA: 4021
Number of IPv4 prefixes with an invalid ROA: 17
Number of IPv4 prefixes with no ROA: 13049
Total ASes present in the Internet Routing Table: 2648
Prefixes per ASN: 6.45
Origin-only ASes present in the Internet Routing Table: 2286
Origin ASes announcing only one prefix: 1053
Transit ASes present in the Internet Routing Table: 362
Transit-only ASes present in the Internet Routing Table: 61
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 15
Max AS path prepend of ASN ( 1149) 11
Prefixes from unregistered ASNs in the Routing Table: 5
Number of instances of unregistered ASNs: 5
Number of 32-bit ASNs allocated by the RIRs: 39561
Number of 32-bit ASNs visible in the Routing Table: 600
Prefixes from 32-bit ASNs in the Routing Table: 1676
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: 2
Number of addresses announced to Internet: 195873808
Equivalent to 11 /8s, 172 /16s and 204 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 1900
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3987
Total APNIC prefixes after maximum aggregation: 2150
APNIC Deaggregation factor: 1.85
Prefixes being announced from the APNIC address blocks: 3988
Unique aggregates announced from the APNIC address blocks: 2539
APNIC Region origin ASes present in the Internet Routing Table: 564
APNIC Prefixes per ASN: 7.07
APNIC Region origin ASes announcing only one prefix: 251
APNIC Region transit ASes present in the Internet Routing Table: 61
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 223
Number of APNIC addresses announced to Internet: 45129984
Equivalent to 2 /8s, 176 /16s and 161 /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: 7279
Total ARIN prefixes after maximum aggregation: 4145
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 7300
Unique aggregates announced from the ARIN address blocks: 4682
ARIN Region origin ASes present in the Internet Routing Table: 1151
ARIN Prefixes per ASN: 6.34
ARIN Region origin ASes announcing only one prefix: 421
ARIN Region transit ASes present in the Internet Routing Table: 151
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 168
Number of ARIN addresses announced to Internet: 86030736
Equivalent to 5 /8s, 32 /16s and 185 /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: 3526
Total RIPE prefixes after maximum aggregation: 2839
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3510
Unique aggregates announced from the RIPE address blocks: 2838
RIPE Region origin ASes present in the Internet Routing Table: 674
RIPE Prefixes per ASN: 5.21
RIPE Region origin ASes announcing only one prefix: 305
RIPE Region transit ASes present in the Internet Routing Table: 102
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 135
Number of RIPE addresses announced to Internet: 57940864
Equivalent to 3 /8s, 116 /16s and 27 /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: 567
LACNIC Deaggregation factor: 2.48
Prefixes being announced from the LACNIC address blocks: 1401
Unique aggregates announced from the LACNIC address blocks: 759
LACNIC Region origin ASes present in the Internet Routing Table: 166
LACNIC Prefixes per ASN: 8.44
LACNIC Region origin ASes announcing only one prefix: 68
LACNIC Region transit ASes present in the Internet Routing Table: 22
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65
Number of LACNIC addresses announced to Internet: 4282368
Equivalent to 0 /8s, 65 /16s and 88 /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: 886
Total AfriNIC prefixes after maximum aggregation: 177
AfriNIC Deaggregation factor: 5.01
Prefixes being announced from the AfriNIC address blocks: 886
Unique aggregates announced from the AfriNIC address blocks: 262
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 32.81
AfriNIC Region origin ASes announcing only one prefix: 8
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2489344
Equivalent to 0 /8s, 37 /16s and 252 /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 2140 454 SINET-AS Research Organization of Infor
1237 187 74 135 KREONET-AS-KR KISTI, KR
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 329 121 AARNET-AS-AP Australian Academic and Re
55824 116 18 11 NKN-CORE-NW NKN Core Network, IN
4538 109 4159 68 ERX-CERNET-BKB China Education and Rese
4621 78 37 10 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
1659 55 1466 35 ERX-TANET-ASN1 Taiwan Academic Network
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 203 178 152 RISQ-AS, CA
5786 194 16 1 UPRENET, PR
2152 151 507 90 CSUNET-NW, US
18558 131 18 4 NETBLK-RCOEK, US
23024 114 7 17 OCDE, US
2920 107 34 6 LACOE, US
32531 91 16 1 FORDHAM-UNIVERSITY, US
21976 85 51 18 NJEDGE-NET, US
3 81 496 15 MIT-GATEWAYS, US
1736 80 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 285 1967 251 DFN Verein zur Foerderung eines Deutsch
786 186 1774 183 JANET Jisc Services Limited, GB
8895 137 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL
2614 96 27 76 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 73 449 73 BELWUE BelWue-Koordination, DE
2200 63 583 58 FR-RENATER Reseau National de telecommu
1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 156 208 45 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 91 24 52 Red Universitaria Nacional, CL
1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
19611 46 17 2 Associacao Antonio Vieira - Unisinos, B
4270 42 16 1 Red de Interconexion Universitaria, AR
61468 41 3 15 CEDIA, EC
28571 38 42 16 UNIVERSIDADE DE SAO PAULO, BR
28614 37 2 2 Fundacao Universidade Regional de Blume
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 375 319 73 TENET-1, ZA
36914 213 82 3 KENET-AS, KE
2561 67 4 32 EUN, EG
8094 48 48 15 PUKNET, ZA
327687 37 28 3 RENU, UG
327700 34 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 18 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 571 2140 454 SINET-AS Research Organization of Infor
2018 375 319 73 TENET-1, ZA
680 285 1967 251 DFN Verein zur Foerderung eines Deutsch
36914 213 82 3 KENET-AS, KE
376 203 178 152 RISQ-AS, CA
5786 194 16 1 UPRENET, PR
1237 187 74 135 KREONET-AS-KR KISTI, KR
786 186 1774 183 JANET Jisc Services Limited, GB
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 329 121 AARNET-AS-AP Australian Academic and Re
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 375 302 TENET-1, ZA
36914 213 210 KENET-AS, KE
5786 194 193 UPRENET, PR
58647 175 173 KAGAWAU-AS Kagawa University, JP
8895 137 133 ISU Internet Services Unit ISU, SA
18558 131 127 NETBLK-RCOEK, US
1916 156 111 Rede Nacional de Ensino e Pesquisa, BR
55824 116 105 NKN-CORE-NW NKN Core Network, IN
2920 107 101 LACOE, US
23024 114 97 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/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
22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/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/CERNET/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /11:1 /12:10
/13:18 /14:31 /15:117 /16:1917 /17:377 /18:413
/19:516 /20:781 /21:788 /22:1319 /23:1378 /24:9411
/25:4 /26:2 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 200 213 KENET-AS, KE
8895 132 137 ISU Internet Services Unit ISU, SA
23024 53 114 OCDE, US
25977 31 45 HCCS, US
28614 31 37 Fundacao Universidade Regional de Blumenau, BR
200521 31 52 SEAP-AGE, ES
32440 30 45 LONI, US
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
327700 30 34 MoRENet, MZ
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 8:2 12:1 14:85 18:46
23:9 24:3 31:7 35:4 37:6 38:9
40:1 41:124 44:5 45:36 46:6 47:1
49:10 50:1 52:1 59:19 61:3 62:6
63:34 64:49 66:27 67:43 68:8 69:19
70:2 71:1 72:9 74:18 76:33 77:7
78:3 79:10 80:18 81:28 82:5 83:6
84:9 85:43 86:4 87:1 88:1 89:10
91:46 93:10 94:4 95:4 96:5 97:1
98:2 101:4 102:6 103:306 104:76 108:8
109:10 110:4 111:16 114:23 116:7 117:61
118:32 119:4 121:17 122:8 123:8 125:1
128:90 129:37 130:93 131:70 132:58 133:145
134:91 136:194 137:74 138:9 139:5 140:38
141:1 142:41 143:30 144:23 145:2 146:125
147:56 148:191 149:12 150:130 151:6 152:75
153:13 154:29 155:51 156:66 157:27 158:44
159:19 160:26 161:21 162:19 163:59 164:19
165:57 166:1 167:16 168:123 169:10 170:51
171:1 172:2 173:6 175:30 176:8 177:11
179:10 180:20 181:1 182:4 184:4 185:39
186:3 187:19 188:13 189:5 190:34 191:34
192:1271 193:308 194:141 195:92 196:160 197:120
198:437 199:246 200:238 201:38 202:563 203:416
204:317 205:164 206:184 207:167 208:64 209:113
210:110 211:15 212:172 213:5 216:85 217:11
218:3 219:7 220:17 222:2
End of report
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